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Syndrome, cartilage hair hypoplasia
A specific genetic form of short-limbed dwarfism with skeletal features that also include normal head, inability to fully extends the elbows, chest cage deformity, bow legs (genu ...
Syndrome, cauda equina
Impairment of the nerves in the cauda equina, a bundle of spinal nerve roots (called the cauda equina because it resembles a horse's tail) that arise from the end of the spinal ...
Syndrome, cavernous sinus
A cavernous sinus thrombosis is a blood clot within the cavernous sinus, a large channel of venous blood in a cavity bordered by the sphenoid bone and the temporal bone of the ...
Syndrome, cerebrohepatorenal
A genetic disorder, which is also called the Zellweger syndrome, characterized by the reduction or absence of peroxisomes (cell structures that rid the body of toxic substances) ...
Syndrome, chromosome 4 short-arm deletion
This syndrome, called the Wolf-Hirschhorn syndrome, is a chromosome disorder due to partial deletion of the short (p) arm of chromosome 4. It is, therefore, also called the 4p- ...
Syndrome, Churg-Strauss
A disease (also called allergic granulomatous angiitis) characterized by inflammation of the blood vessels in persons with a history of asthma or allergy. The symptoms of the ...
Syndrome, Cockayne
A genetic disorder characterized by dwarfism, prematurely aging, visual problems and deafness, sensitivity to sunlight, and mental retardation. The disease is due to a defect in ...
Syndrome, Coffin-Lowry
An X-linked form of mental retardation in which the affected males have short stature and characteristic face, finger and skeletal abnormalities. Facial features include ...
Syndrome, Cogan
A form of arteritis (also referred to as vasculitis) that involves the ear. This condition is called Cogan syndrome after the American ophthalmologist David Glendenning Cogan ...
Syndrome, complete androgen insensitivity
A genetic disorder that makes XY fetuses insensitive (unresponsive) to androgens (male hormones). Instead, they are born looking externally like normal girls. Internally, there is ...
Syndrome, congenital central hypoventilation (CCHS)
Failure from birth of central nervous system control over breathing while asleep. There are usually no breathing problems while awake. The involuntary (autonomic) control of ...
Syndrome, congenital rubella
The constellation of abnormalities caused by infection with the rubella (German measles) virus before birth. The syndrome is characterized by multiple congenital malformations ...
Syndrome, Conn
Overproduction of the hormone aldosterone (pronounced al-do-ster-one) by a tumor that contains tissue resembling that normally present in the outer portion (cortex) of the ...
Syndrome, contiguous gene
A disorder clearly involving multiple gene loci that are adjacent to one another. An example of a contiguous gene syndrome is Angelman syndrome. It is due to the loss of a ...
Syndrome, Cornelia de Lange
A relatively common birth defect syndrome with multiple malformations and mental retardation of unknown origin that is recognized by the presence of: Prenatal and postnatal ...
Syndrome, cracked tooth
A toothache caused by a broken tooth (tooth fracture) without associated cavity or advanced gum disease. Biting on the area of tooth fracture can cause severe sharp pains. These ...
Syndrome, Creutzfeldt-Jakob
Better known as Creutzfeldt-Jakob disease (CJD). A dementing disease of the brain. It is believed due to an unconventional (not a bacteria or virus), transmissible agent called ...
Syndrome, Cushing
The constellation of symptoms and signs caused by an excess of cortisol hormone. Cushing syndrome is an extremely complex hormonal condition that involves many areas of the ...
Syndrome, cyclic vomiting
A syndrome characterized by episodes, bouts, or cycles of severe nausea and vomiting that last for hours or even days and alternate with longer asymptomatic periods (with no ...
Syndrome, Danlos
Better known today as Ehlers-Danlos syndrome (EDS), is an inherited disorder with easy bruising, joint hypermobility (loose joints), skin laxity, and weakness of tissues. There ...
Syndrome, de Lange
A relatively common syndrome with multiple congenital malformations (birth defects) and mental retardation of unknown origin that is recognized by the presence of: Prenatal and ...
Syndrome, dengue shock
A syndrome due to the dengue virus that tends to affect children under 10, causing abdominal pain, hemorrhage (bleeding) and circulatory collapse (shock). Known also as ...
Syndrome, DiGeorge (DGS)
This congenital disorder is characterized by the convergence of the following three features: {{}}Low blood calcium levels: The low levels of calcium, also known as ...
Syndrome, Down
A common chromosome disorder due to an extra chromosome number 21 (trisomy 21). Down syndrome causes mental retardation, a characteristic face, and multiple malformations. Down ...
Syndrome, dumping
A group of symptoms that occur when food or liquid enters the small intestine too rapidly. These symptoms include cramps, nausea, diarrhea, and dizziness.
Syndrome, dyskeratosis congenita
An inherited cause of bone-marrow failure, dyskeratosis congenita is a syndrome characterized by abnormal excess skin pigmentation, abnormal or absent nails, and mucosal ...
Syndrome, Eagle
Inflammation of the styloid process, a spike-like projection sticking off the base of the skull. The tissues in the throat rub on this structure during the act of swallowing ...
Syndrome, economy class
The formation of blood clots in veins deep within the legs — deep vein thrombosis — occurring during (or just after) a long airplane flight, especially in economy class ...
Syndrome, Edwards
This is trisomy 18 syndrome. There are three instead of the normal two chromosomes #18. Children with this condition have multiple malformations and mental retardation due to the ...
Syndrome, Ehlers-Danlos
A heritable disorder of connective tissue with easy bruising, joint hypermobility (loose joints), skin laxity, and weakness of tissues. There are a number of different types of ...
Syndrome, Fahr
This syndrome described in 1930 by T. Fahr is a genetic (inherited) neurological disorder characterized by abnormal deposits of calcium in certain of areas of the brain ...
Syndrome, fetal alcohol (FAS)
The sum total of a person’s problems caused by maternal alcohol intake during pregnancy.
Syndrome, fish-odor
An inborn error of metabolism associated with an offensive body odor, the smell of rotting fish, due to the excessive excretion of trimethylaminuria (TMA) in urine, sweat, and ...
Syndrome, floppy baby
A general medical reference to an abnormal condition of newborns and infants manifested by inadequate tone of the muscles. It can be due to a multitude of different neurologic and ...
Syndrome, fragile X
The most common heritable form of mental retardation, occurring in about one in two thousand males and a smaller percentage of females. Characteristics of Fragile X syndrome in ...
Syndrome, Frey
Sweating on one side of the forehead, face, scalp, and neck occurring soon after ingesting food as a result of damage to a nerve that goes to the large saliva gland in the cheek ...
Syndrome, Gelineau
A neurological disorder marked by a sudden recurrent uncontrollable compulsion to sleep. Named for a French neurologist, JBE Gelineau (1859-1906). Also known as narcolepsy. The ...
Syndrome, giant platelet (Bernard-Soulier syndrome)
This condition is a primary problem of platelets in which the platelets lack the ability to stick adequately to injured blood vessel walls and as a result of this problem there is ...
Syndrome, goiter-deafness
The goiter-deafness syndrome, commonly called Pendred syndrome, is the hereditary association of congenital deafness (deafness at the time of birth) and goiter (enlargement of ...
Syndrome, Gower (situational syncope)
The temporary loss of consciousness in particular kinds of situations. (Syncope is temporary loss of consciousness or, in plain English, fainting). The situations that trigger ...
Syndrome, Guillain-Barre
This disorder is characterized by progressive symmetrical paralysis and loss of reflexes, usually beginning in the legs. There is, in most cases, nearly complete or complete ...
Syndrome, Gulf War
A controversial syndrome involving a constellation of illnesses experienced by 5,000 to 80,000 American veterans who were in the 1992 Gulf War. Despite extensive (and expensive) ...
Syndrome, Gustavson
A disorder first reported in 1999 by Gustavson and colleagues as a new X-linked mental retardation syndrome. In the family they studied there were 7 male children in 2 generations ...
Syndrome, hand-foot-and-mouth
A clinical pattern consisting of a rash on the hands and feet and in the mouth due to a viral infection. The internal rash (the enanthem) consists of blisters and little ulcers ...
Syndrome, Hantavirus pulmonary (HPS)
A disease that struck the Four Corners area (where the States of Arizona, New Mexico, Nevada and Utah meet) in 1993 with devastating, frequently fatal consequences. As the name ...
Syndrome, HDR
The syndrome of familial Hypoparathyroidism, sensorineural Deafness, and Renal dysplasia. Inherited as an autosomal dominant trait, the syndrome is caused by haploinsufficiency ...
Syndrome, Hecht
Inherited disorder transmitted as an autosomal dominant trait in which short tight muscles make it impossible to open the mouth fully or keep the fingers straight when the hand is ...
Syndrome, HELLP
1. A syndrome featuring a combination of "H" for hemolysis (breakage of red blood cells), "EL" for elevated liver enzymes, and "LP" for low platelet count (an essential blood ...
Syndrome, hemolytic-uremic (HUS)
: A condition involving breakup of red blood cells and kidney failure. There is clumping of platelets (the blood cells responsible for clotting) within the kidney's small blood ...
Syndrome, Hermansky-Pudlak (HPS)
A genetic (inherited) disorder characterized by albinism (with lack of skin and eye pigment), bruising and prolonged bleeding (due to defective blood platelets), and fibrosis of ...
Syndrome, Horner
A complex of abnormal findings, namely sinking in of one eyeball, ipsilateral ptosis (drooping of the upper eyelid on the same side) and miosis (constriction of the pupil of ...
Syndrome, Hurler
An inherited error of metabolism in which there is deficiency of the enzyme alpha-L-iduronidase which normally breaks down molecules called mucopolysaccharides. Without the ...
Syndrome, hypoplastic left heart
A form of congenital heart disease in which the whole left half of the heart (including the aorta , aortic valve, left ventricle and mitral valve) is underdeveloped ...
Syndrome, incontinentia pigmenti
A genetic disease that begins soon after birth with the development of blisters on the trunk and limbs. These blisters then heal, but leave dark hyperpigmented streaks and ...
Syndrome, irritable bowel (IBS)
A common gastrointestinal disorder (also called spastic colitis, mucus colitis or nervous colon syndrome), IBS is an abnormal condition of gut contractions (motility) ...
Syndrome, Jadassohn-Lewandowski
This is a type of what is called pachyonychia congenita (elephant nails from birth). The characteristic features include: {{}}Abnormally thick curved nails (onychogryposis) ...
Syndrome, Johnson-Stevens
More often called the Stevens-Johnson syndrome (SJS), this is a systemic (bodywide) disease with a characteristic rash involving the skin and mucous membranes, including the ...
Syndrome, joint hypermobility
See Syndrome, hypermobility.
Syndrome, Kanner
(Also called autism). A spectrum of neuropsychiatric disorders characterized by deficits in social interaction and communication, and unusual and repetitive behavior. Some, but ...
Syndrome, Kartagener’s
The trio of sinusitis, bronchitis and situs inversus (lateral reversal of the position all organs in the chest and abdomen with the heart and stomach on the right, the liver ...
Syndrome, Kawasaki
A syndrome of unknown origin, mainly affecting young children, that causes fever, reddening of the eyes (conjunctivitis), lips and mucous membranes of the mouth, ulcerative gum ...
Syndrome, KID
Acronym for the Keratitis- Ichthyosis-Deafness syndrome, a genetic disorder. See Keratitis-ichthyosis-deafness syndrome.
Syndrome, Klinefelter
A chromosome condition in boys and men that is usually due to their having 47 chromosomes with XXY sex chromosomes, rather than having the usual 46 chromosomes with XY sex ...
Syndrome, Klippel-Feil
The combination of short neck, low hairline at the nape of the neck and limited movement of the head. It is due to a defect in the early development of the spinal column in the ...
Syndrome, Klippel-Trenaunay-Weber (KTW)
A congenital malformation syndrome characterized by the triad of asymmetric limb hypertrophy, hemangiomata, and nevi. "Asymmetric limb hypertrophy" is enlargement ...
Syndrome, Kostmann
A condition with a lack of neutrophils (a type of white blood cell that is important in fighting infection). Children with the syndrome suffer frequent infections from bacteria ...
Syndrome, Landau-Kleffner (LKS)
A disorder with seizures starting in childhood in which the patient loses skills, such as speech, and develops behavior characteristic of autism. A major feature of LKS is the ...
Syndrome, Launois-Bensaude
A disorder characterized by painless symmetrical diffuse deposits of fat beneath the skin of the neck, upper trunk, arms and legs. The condition is thought to be genetic although ...
Syndrome, Lennox
Also known as the Lennox-Gastaut syndrome, a severe form of epilepsy that usually begins in early childhood and is characterized by frequent seizures of multiple types, mental ...
Syndrome, Lennox-Gastaut
A severe form of epilepsy that usually begins in early childhood and is characterized by frequent seizures of multiple types, mental impairment, and a particular brain wave ...
Syndrome, Li-Fraumeni (LFS)
This is an extraordinary cancer family syndrome. People with LFS have a tendency to develop a great diversity of tumors. LFS was first discovered in 1969. By reviewing the medical ...
Syndrome, lipodystrophy
A disturbance of lipid (fat) metabolism that involves the partial or total absence of fat and often the abnormal deposition and distribution of fat in the body. There are a number ...
Syndrome, locked-in
A neurological disorder characterized by complete paralysis of voluntary muscles in all parts of the body except for those that control eye movement. The locked-in syndrome is ...
Syndrome, long QT
An inherited defect in the heart's rhythm. In the U.S. it is estimated that 4,000 American children and young adults die yearly of the long QT syndrome. It is a common cause of ...
Syndrome, long QT (LQTS)
A genetic (inherited) condition that predisposes individuals to irregular heartbeats (arrhythmias), fainting spells and sudden death. The irregular heartbeats are typically ...
Syndrome, Marfan
Inherited disorder with long fingers and toes, dislocation of the lens, and aortic wall weakness and aneurysm. (It has been suggested that Abraham Lincoln had Marfan syndrome.)
Syndrome, Martin-Bell
Better known as the fragile X syndrome, the most common heritable form of mental retardation. Fragile X syndrome is due to mutation (changes) at the fragile X site and so ...
Syndrome, MASA
MASA stands for mental retardation, aphasia, shuffling gait, and adducted thumbs. Features of the syndrome include (1) neurologically: mental retardation and aphasia (lack of ...
Syndrome, MASS
A heritable disorder of connective tissue characterized by involvement of the mitral valve, aorta, skeleton, and skin. Hence, the acronym MASS (Mitral valve, Aorta, Skeleton, ...
Syndrome, McKusick-Kaufman
A genetic disorder in which there is build-up of fluids (called hydrometrocolpos) in the vagina and the uterus as a result of a membrane across the vagina which holds back the ...
Syndrome, MELAS
MELAS is the acronym for Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes. MELAS is a form of dementia. It is caused by mutations in the genetic ...
Syndrome, Meniere
A condition with recurrent vertigo accompanied by ringing in the ears (tinnitus) and deafness. Symptoms include vertigo, dizziness, nausea, vomiting, loss of hearing (in the ...
Syndrome, Menkes
A genetic disorder, also known as the kinky hair syndrome, in which the hair is fragile and twisted ("kinky") and there is progressive deterioration of the brain and arterial ...
Syndrome, mucocutaneous lymph node
A syndrome of unknown origin, mainly affecting young children. It causes fever, reddening of the eyes (conjunctivitis) and lips and mucous membranes of the mouth, ulcerative gum ...
Syndrome, Munchhausen
Recurrent feigning of catastrophic illnesses. Munchhausen syndrome is a psychological disorder that is characterized by the recurrent presentation of the patient for treatment of ...
Syndrome, myelodysplastic
A condition in which the bone marrow does not function normally. It does not produce enough blood cells. This condition may progress and become acute leukemia. Myelodysplastic ...
Syndrome, nervous colon
A common gastrointestinal disorder involving an abnormal condition of gut contractions (motility) characterized by abdominal pain, bloating, mucous in stools, and irregular bowel ...
Syndrome, Noonan (NS)
A multifaceted genetic disorder characterized by a series of birth defects (congenital malformations) including dysmorphic (malformed) facial features, short stature after birth ...
Syndrome, Osler-Rendu-Weber
Known as hereditary hemorrhagic telangectasia (HHT), this is a genetic vascular disease with dilatation (widening) of capillaries and small arteries (arterioles) producing ...
Syndrome, Pallister-Killian
Condition with multiple malformations at birth and mental retardation due to isochromosome 12p mosaicism (an abnormal chromosome #12 in some cells).
Syndrome, paraneoplastic
A group of signs and symptoms due to a substance produced by a tumor or in reaction to the tumor. Paraneoplastic syndromes can be due to hormones (or other biologically active ...
Syndrome, Patau
Trisomy 13 syndrome or three chromosome number 13s instead of the normal two. Children with this condition have multiple malformations and mental retardation due to an extra ...
Syndrome, patellofemoral (PFS)
The commonest cause of chronic knee pain, PFS characteristically causes vague discomfort of the inner knee area, aggravated by activity (running, jumping, climbing or descending ...
Syndrome, Pendred
Pendred syndrome (PDS) is the hereditary association of congenital deafness (deafness at the time of birth) and goiter (enlargement of the thyroid gland in the front of the neck) ...
Syndrome, Peter Pan
Term coined by pop psychology author Dan Kiley in his book " Peter Pan syndrome: Men Who Have Never Grown Up." Peter Pan is in reference to J. M. Barrie's classic play in which a ...
Syndrome, phantom limb
In the phantom limb syndrome, a person continues to feel sensations, usually including pain, in an arm or leg long after the limb has been amputated. Phantom sensations can ...
Syndrome, Pickwickian
The combination of obesity, somnolence (sleepiness), hypoventilation (underbreathing), and plethoric (red) face. The syndrome is so named because of the "fat and red-faced boy ...
Syndrome, piriformis
Irritation of the sciatic nerve caused by compression of the nerve within the buttock by the piriformis muscle. Typically, the pain of the piriformis syndrome is increased by ...
Syndrome, Pisa
A condition in which there is sustained involuntary flexion of the body and head to one side and slight rotation of the trunk so the person appears to lean like the Leaning Tower ...
Syndrome, Poland
A unique pattern of one-sided malformations characterized by a defect of the chest (pectoralis) muscle on one side of the body and webbing of the fingers (cutaneous syndactyly) ...
Syndrome, polyglandular autoimmune (PGA)
A genetic autoimmune disease with an extraordinary array of clinical features but characterized most often by at least 2 of the following 3 findings: hypoparathyroidism — ...
Syndrome, popliteal pterygium
An inherited condition with a web behind the knee. (A pterygium is a winglike triangular membrane.)
Syndrome, post-polio(PPS)
A constellation of symptoms and signs that appear from 20 to 40 years after the initial polio infection, and at least 10 years after what was thought to be recovery from polio ...
Syndrome, Prader-Willi
A condition characterized by muscle floppiness (hypotonia), excess appetite that if unchecked leads to obesity, small hands and feet and mental retardation. The syndrome is due ...
Syndrome, Proteus
A disturbance of cell growth including benign tumors under the skin, overgrowth of the body, often more on one side than the other (hemihypertrophy), and overgrowth of fingers ...
Syndrome, prune belly
Partial or complete absence of the abdominal muscles so that the outlines of the intestines are visible through the thin, lax, protruding abdominal wall. The abdominal wall looks ...
Syndrome, Raeder’s
A distinctive syndrome of headaches, also known as cluster headache or migrainous neuralgia. The common pattern of cluster headache is termed “episodic” and is ...
Syndrome, Ramsey Hunt
A herpes virus infection of the geniculate nerve ganglion, the Ramsey Hunt syndrome causes paralysis of the facial muscles on the same side of the face as the infection. It is ...
Syndrome, reflex sympathetic dystrophy (RSDS)
A condition that features a group of typical symptoms, including pain (often "burning" type), tenderness, and swelling of an extremity associated with varying degrees ...
Syndrome, Reiter
A chronic form of inflammatory arthritis wherein the following three conditions are combined: (1) arthritis; (2) inflammation of the eyes (conjunctivitis); and (3) inflammation ...
Syndrome, renal, with hemorrhagic fever
A number of diseases, also known as hemorrhagic fever, characterized by an abrupt onset of high fever and chills, headache, cold and cough, and pain in the muscles, joints and ...
Syndrome, Rendu-Osler-Weber
Known as hereditary hemorrhagic telangectasia (HHT), this is a genetic vascular disease with dilatation (widening) of capillaries and small arteries (arterioles) producing ...
Syndrome, Rett
A genetic disease that is a uniform and striking, progressive neurologic developmental disorder and one of the most common causes of mental retardation in females. After normal ...
Syndrome, Reye
A sudden, sometimes fatal, disease of the brain (encephalopathy) with degeneration of the liver, occurs in children (most cases 4-12 years of age), comes after the chickenpox ...
Syndrome, Rothmund-Thomson
An hereditary disease characterized by progressive degeneration (atrophy), scarring and abnormal pigmentation of the skin together with stunting of growth, baldness, cataracts, ...
Syndrome, Shprintzen
Congenital malformation (birth defect) syndrome with cleft palate, heart defect, abnormal face, and learning problems. The condition is also called the velo-cardio-facial (VCF) ...
synechia
Any adhesion; specifically, anterior or posterior s.. [G. synecheia, continuity, fr. syn, together, + echo, to have, hold] - anterior s. adhesion of the iris to the cornea. - ...
synechiotomy
Division of the adhesions in synechia. [ synechia + G. tome, incision]
synechotome
A small knife for use in synechiotomy.
synectenterotomy
Division of intestinal adhesions. [G. synektos, held together (see synechia), + enteron, intestine, + tome, incision]
synencephalocele
Protrusion of brain substance through a defect in the skull, with adhesions preventing reduction. [ syn- + G. enkephalos, brain, + kele, hernia]
syneresis
1. The contraction of a gel, e.g., a blood clot, by which part of the dispersion medium is squeezed out. 2. Degeneration of the vitreous humor with loss of gel consistency to ...
synergetic
SYN: synergistic.
synergia
SYN: synergism.
synergic
SYN: synergistic.
synergism
Coordinated or correlated action of two or more structures, agents, or physiologic processes so that the combined action is greater than the sum of each acting separately. ...
synergist
A structure, agent, or physiologic process that aids the action of another. Cf.:antagonist.
synergistic
1. Pertaining to synergism. 2. Denoting a synergist. SYN: synergetic, synergic.
synergy
SYN: synergism.
Synesthesia
A condition in which the normally separate senses are not separate. Sight may mingle with sound, taste with touch, etc. The senses are cross-wired. For example, when a digit-color ...
synesthesialgia
Painful synesthesia. SYN: synesthesia algica.
Synesthete
A person with synesthesia, a condition in which the normally separate senses are not separate. Sight may mingle with sound, taste with touch, etc. The senses are cross-wired. For ...
Syngamidae
A family of nematodes (order Strongyloidea) parasitic in the respiratory system of birds and mammals. [see Syngamus]
Syngamus
A genus of bloodsucking, strongyle gapeworms of the family Syngamidae. - S. laryngeus infestation of the larynx with nematodes of the S. genus causing cough, hemoptysis, ...
syngamy
Conjugation of the gametes in fertilization. [ syn- + G. gamos, marriage]
syngeneic
Relating to genetically identical individuals. SYN: isogeneic, isogenic, isologous, isoplastic, syngenic. [G. syngenes, congenital]
syngenesis
SYN: sexual reproduction. [ syn- + G. genesis, origin]
syngenetic
Relating to syngenesis.
syngenic
SYN: syngeneic.
syngnathia
Congenital adhesion of the maxilla and mandible by fibrous bands. [ syn- + G. gnathos, jaw]
syngraft
A tissue or organ transplanted between genetically identical individuals. SYN: isogeneic graft, isograft, isologous graft, isoplastic graft, syngeneic graft.
synidrosis
A condition in which excessive sweating is part of the clinical manifestation. [ syn- + G. hidrosis, sweating]
synizesis
1. Closure or obliteration of the pupil. 2. The massing of chromatin at one side of the nucleus that occurs usually at the beginning of synapsis. [G. collapse]
synkaryon
The nucleus formed by the fusion of the two pronuclei in karyogamy. SYN: syncaryon. [ syn- + G. karyon, kernel (nucleus)]
synkinesis
Involuntary movement accompanying a voluntary one, as the movement of a closed eye following that of the uncovered one, or the movement occurring in a paralyzed muscle ...
synkinetic
Relating to or marked by synkinesis.
synnematin B
SYN: cephalosporin N.
synonychia
Fusion of two or more nails of the digits, as in syndactyly. [sin- + G. onyx (onych-), nail]
synonym
In biologic nomenclature, a term used to denote one of two or more names for the same species or taxonomic group (taxon). - objective synonyms different names for the same ...
synophrys
Hypertrophy and fusion of the eyebrows. [ syn- + G. ophrys, eyebrow]
synophthalmia
SYN: cyclopia. [ syn- + G. ophthalmos, eye]
synophthalmus
SYN: cyclopia.
synoptophore
A modified form of Wheatstone stereoscope used in orthoptic training. [ syn- + G. ops, eye, + phoros, bearing]
synorchidism, synorchism
Congenital fusion of the testes in the abdomen or scrotum. [ syn- + G. orchis, testis]
synoscheos
Partial or complete adhesion of the penis and scrotum, a malformation in hermaphroditism. [ syn- + G. osche, scrotum]
synosteology
SYN: arthrology. [ syn- + G. osteon, bone, + logos, study]
synosteosis
SYN: synostosis.
synostosis
Osseous union between two bones that are not supposed to be united; commonly refers to formation of a bony bundle between the radius and ulna following fracture of these two ...
synostotic
Relating to synostosis.
synotia
Fusion or abnormal approximation of the lobes of the ears in otocephaly. [ syn- + G. ous, ear]
synovectomy
Excision of a portion or all of the synovial membrane of a joint. [synovia + G. ektome, excision] - radiopharmaceutical s. the treatment of abnormal synovial membranes by ...
Synovia
The joint fluid. The term synovia was invented in 1520 by the Swiss physician (and alchemist) Paracelsus who combined the Greek syn-(together) and oon (egg) to create a name for ...
synovial
1. Relating to, containing, or consisting of synovia. 2. Relating to the membrana synovialis.
Synovial chondromatosis
A disorder of a joint featuring a change of the normal joint lining (synovium) tissue's cellular structure to form cartilage tissue. Synovial chondromatosis is rare. Synovial ...
Synovial cyst, popliteal
A swelling in the space behind the knee (the popliteal space). The swelling is composed of a membrane-lined sac filled with synovial fluid that has escaped from the joint. ...
Synovial fluid
The slippery fluid that lubricates joints and provides nutrients to the cartilage. Also known as the synovia.
Synovial osteochondromatosis
A disorder of a joint featuring a change of the normal joint lining (synovium) tissue's cellular structure to form bone-cartilage tissue. Synovial osteochondromatosis is ...
synoviparous
Producing synovia. [synovia + L. pario, to produce]
synovitis
Inflammation of a synovial membrane, especially that of a joint; in general, when unqualified, the same as arthritis. [synovia + G. -itis, inflammation] - bursal s. SYN: ...
synovium
SYN: synovial membrane.
synpolydactyly
Associated syndactyly and polydactyly.
syntactics
A branch of semiotics concerned with the formal relations between signs, in abstraction from their meaning and their interpreters. [ syn- + G. taxis, order]
syntality
The consistent and predictable behavior of a social group. [prob. telescoped from syn- + mentality]
syntectic
Pertaining to or marked by syntexis.
syntenic
Pertaining to synteny.
synteny
The relationship between two genetic loci (not genes) represented on the same chromosomal pair or (for haploid chromosomes) on the same chromosome; an anatomic rather than a ...
syntexis
Emaciation or wasting. [G. syn-texis, a melting together]
synthase
Trivial name used in the Enzyme Commission Report for a lyase reaction going in the reverse direction (NTP-independent). For individual synthases, see the specific names. SEE ...
synthermal
Having the same temperature. [ syn- + G. therme, heat]
Synthesis
Putting together different entities to make a whole which is new and different. In biochemistry, synthesis refers specifically to the process of building compounds from more ...
synthesize
To make something by synthesis, i.e., synthetically.
synthetase
An enzyme catalyzing the synthesis of a specific substance. S. is limited, in the Enzyme Commission Report, to use as a trivial name for the ligases (EC class 6), which in turn ...
synthetic
Relating to or made by synthesis.
synthorax
SYN: thoracopagus.
syntonic
Having even tone or temperament; a personality trait characterized by a high degree of emotional responsiveness to the environment. [G. syntonos, in harmony, fr. syn, together, ...
syntrophism
State of mutual dependence, with reference to food supply, of organs or cells of a plant or an animal. [ syn- + G. trophe, nourishment]
syntrophoblast
SYN: syncytiotrophoblast.
syntropic
Relating to syntropy.
syntropy
1. The tendency sometimes seen in two diseases to coalesce into one. 2. The state of harmonious association with others. 3. In anatomy, a number of similar structures inclined in ...
synzyme
A synthetic macromolecule having enzymatic activity. SYN: enzyme analog.
Syphacia
Genus of oxyurid nematode pinworms of rodents; S. obvelata is the common cecal pinworm of mice, and S. muris, of rats. SEE ALSO: Aspiculuris tetraptera. [fr. L. siphon, tube] ...
syphil-
See syphilo-.
syphilemia
A state in which the specific organism, Treponema pallidum, is present in the bloodstream. [syphilis + G. haima, blood]
syphilid
Historic term for any of the several kinds of cutaneous and mucous membrane lesions of secondary and tertiary syphilis. SYN: syphiloderm, syphiloderma. [syphilis + -id (1)]
syphilimetry
A test designed to determine intensity of syphilitic infection, e.g., titered serologic test. [syphilis + G. metron, measure]
Syphilis
A sexually transmitted disease caused by Treponema pallidum, a microscopic organism called a spirochete. This worm-like, spiral-shaped organism infects people by burrowing ...
Syphilis test, RPR
Rapid plasma reagin, a blood test for syphilis that looks for an antibody that is present in the bloodstream when a patient has syphilis. A negative (nonreactive) RPR is ...
Syphilis test, VDRL
A blood test for syphilis (VDRL stands for Venereal Disease Research Laboratory) that detects an antibody that is present in the bloodstream when a patient has syphilis. A ...
Syphilis, congenital
Infection of a fetus or newborn with syphilis. Syphilis in a fetus can cause deformity, particularly of the long bones, or death. Syphilis infection acquired at birth is also ...
Syphilis, tertiary
The third stage of syphilis, in which the syphilis spirochetes infect the brain and other organs of the body. Dementia is a common outcome. Tertiary syphilis can develop many ...
syphilitic
Relating to, caused by, or suffering from syphilis. SYN: luetic.
syphilo-, syphil-, syphili-
Syphilis. [see syphilis]
syphiloderm, syphiloderma
SYN: syphilid. [syphilo- + G. derma, skin]
syphiloid
Resembling syphilis. [syphilo- + G. eidos, resemblance]
syphilologist
One who specializes in the study, diagnosis, and treatment of syphilis.
syphilology
The branch of medical science concerned with the origin, prevention, and treatment of syphilis. [syphilo- + G. logos, study]
syphiloma
SYN: gumma. [syphilo- + G. -oma, tumor] - s. of Fournier SYN: Fournier disease.
syr
Abbreviation of Mod. L. syrupus, syrup.
syrigmus
SYN: tinnitus aurium. [L. fr. G. syrigmos, a hissing]
syring-
See syringo-.
syringadenoma
A benign sweat gland tumor showing glandular differentiation typical of secretory cells. SYN: syringoadenoma. [ syring- + G. aden, gland, + -oma, tumor]
syringadenosus
Relating to the sweat glands. [L. fr. syring- + G. aden, gland]
Syringe
A device used in medicine to inject fluid into or withdraw fluid from the body. Medical syringes consist of a needle attached to a hollow cylinder that is fitted with a sliding ...
syringeal
Relating to a syrinx.
syringectomy
SYN: fistulectomy. [ syring- + G. ektome, excision]
syringitis
Inflammation of the eustachian tube. [ syring- + G. -itis, inflammation]
syringo-, syring-
A syrinx; syringeal. [G. syrinx, pipe or tube]
syringoadenoma
SYN: syringadenoma.
syringobulbia
A fluid-filled cavity of the brainstem, analogous to syringomyelia. [syringo- + L. bulbus, bulb (medulla oblongata)]
syringocarcinoma
Obsolete term for a malignant epithelial neoplasm which has undergone cystic change (cystic carcinoma). [syringo- + carcinoma]
syringocele
1. SYN: central canal. 2. A meningomyelocele in which there is a cavity in the ectopic spinal cord. [syringo- + G. koilia, a hollow]
syringocystadenoma
A cystic benign sweat gland tumor. [syringo- + cystadenoma] - s. papilliferum a s. characterized by numerous fingerlike projections of proliferated neoplastic epithelial cells in ...
syringocystoma
SYN: hidrocystoma. [syringo- + cystoma]
syringoencephalomyelia
A tubular cavity involving both brain and spinal cord and etiologically unrelated to vascular insufficiency. [syringo- + G. enkephalos, brain, + myelos, marrow]
syringoid
Resembling a tube or fistula. [syringo- + G. eidos, resemblance]
Syringoma
A benign (non-cancerous) skin tumor that derives from eccrine cells, specialized cells that are related to sweat glands. The skin lesions usually appear during puberty or adult ...
syringomeningocele
A form of spina bifida in which the dorsal sac consists chiefly of membranes, with very little spinal cord substance, enclosing a cavity that communicates with a syringomyelic ...
syringomyelia
The presence in the spinal cord of longitudinal cavities lined by dense, gliogenous tissue, which are not caused by vascular insufficiency. S. is marked clinically by pain and ...
syringomyelocele
A form of spina bifida, consisting of a protrusion of the membranes and spinal cord through a dorsal defect in the vertebral column, the fluid of the syrinx of the cord being ...
syringomyelus
SYN: syringomyelia. [syringo- + G. myelos, marrow]
syringopontia
A condition of cavity formation in the pons, of the same nature as syringomyelia. [syringo- + L. pons, bridge]
syringotome
SYN: fistulatome.
syringotomy
SYN: fistulotomy.
syrinx
1. A rarely used synonym for fistula. 2. A pathologic tubular cavity in the brain or spinal cord. [G. a tube, pipe]
syrosingopine
Prepared from reserpine by hydrolysis and reesterification; an antihypertensive agent with actions similar to those of reserpine.
syrup
1. Refined molasses; the uncrystallizable saccharine solution left after the refining of sugar. 2. Any sweet fluid; a solution of sugar in water in any proportion. 3. A liquid ...
syrupus
SYN: syrup. [Mod. L.]
syrupy
Relating to syrup; of the consistency of syrup.
syssarcosic
SYN: syssarcotic.
syssarcosis
A muscular articulation; union of bones by muscle; e.g., in man, the muscular connections of the patella. [G. syssarkosis, a being overgrown with flesh, fr. syn, with, + sarx, ...
syssarcotic
Relating to or characterized by syssarcosis. SYN: syssarcosic.
system
1. [TA] A consistent and complex whole made up of correlated and semiindependent parts. A complex of functionally related anatomic structures. 2. The entire organism seen as a ...
System, autonomic nervous
Part of the nervous system that was once thought to be functionally independent of the brain. The autonomic nervous system regulates key functions of the body including the ...
System, cardiac conduction
The electrical conduction system that controls the heart rate. This system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the ...
System, central nervous (CNS)
That part of the nervous system that consists of the brain and spinal cord. The central nervous system (CNS) is one of the two major divisions of the nervous system. The other is ...
System, immune
A complex system that is responsible for distinguishing us from everything foreign to us, and for protecting us against infections and foreign substances. The immune system works ...
System, locomotive
The system that permits locomotion, movement from one place to another. The key components of this system are the bones that are the framework of the skeleton, the joints that ...
System, parasympathetic nervous
: A part of nervous system that slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles. The parasympathetic nervous system together with the ...
System, peripheral nervous (PNS)
That portion of the nervous system that is outside the brain and spinal cord. The peripheral nervous system (PNS) is one of the two major divisions of the nervous system. The ...
System, sympathetic nervous
A part of nervous system that accelerates the heart rate, constricts blood vessels, and raises blood pressure. The sympathetic nervous system together with the parasympathetic ...
systema
SYN: system. SEE ALSO: system, apparatus. [L. fr. G. s.] - s. alimentarium SYN: alimentary system. - s. cardiovasculare [TA] SYN: cardiovascular system. - s. conducens cordis ...
systematic
Relating to a system in any sense; arranged according to a system.
systematic name
As applied to chemical substances, a s. is composed of specially coined or selected words or syllables, each of which has a precisely defined chemical structural meaning, so that ...
systematization
The arrangement of ideas into orderly sequence.
Système International d'Unités
See International System of Units.
systemic
Relating to a system; specifically somatic, relating to the entire organism as distinguished from any of its individual parts.
Systemic lupus erythematosus
A chronic inflammatory condition caused by an autoimmune disease. An autoimmune disease occurs when the body's tissues are attacked by its own immune system. Patients with lupus ...
Systemic therapy
: Treatment that reaches cells throughout the body by traveling through the bloodstream.
systemoid
Resembling a system; denoting a tumor of complex structure resembling an organ.
Systole
The time period when the heart is contracting. The period specifically during which the left ventricle of the heart contracts. The final letter in "systole" is pronounced as a ...
Systolic
The blood pressure when the heart is contracting. It is specifically the maximum arterial pressure during contraction of the left ventricle of the heart. The time at which ...
systolometer
1. An apparatus for determining the force of the cardiac contraction. 2. An instrument for analyzing the sounds of the heart. [ systole + G. metron, measure]
systremma
A muscular cramp in the calf of the leg, the contracted muscles forming a hard ball. [G. anything twisted]

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