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selegiline
A monoamine oxidase enzyme inhibitor; inhibits only the type B isozyme so that consuming tyramine-containing foods or beverages is less likely to induce hypertensive crisis in ...
selene unguium
SYN: lunule of nail. [G. selene, moon; gen. pl. of L. unguis, nail]
Selenium
An essential mineral that is a component of a key antioxidant enzyme, glutathione reductase, in tissue respiration. Deficiency of selenium causes Keshan disease, a fatal form of ...
Selenium deficiency
Deficiency of the essential mineral selenium causes Keshan disease, a fatal form of cardiomyopathy (disease of the heart muscle) first observed in Keshan province in China and ...
Selenium excess
Too much of the mineral selenium may cause reversible changes in the hair (balding) and nails, garlic odor to the breath, intestinal distress, weakness and slower mentation ...
selenocysteine
Cysteine containing selenium in place of one sulfur atom.
selenodont
Denoting an animal, or humans, having teeth, as the human molars, with longitudinal crescent-shaped ridges. [G. selene, moon, + odous (odont-), tooth]
selenomethionine
Methionine containing selenium in place of sulfur.
Selenomonas
A genus of bacteria of uncertain taxonomic affiliation, containing curved to crescentic or helical, Gram-negative, strictly anaerobic rods that are motile with an active ...
self
1. A sum of the attitudes, feelings, memories, traits, and behavioral predispositions that make up the personality. 2. The individual as represented in his or her own awareness ...
self-accusation
A common psychiatric symptom, encountered most characteristically in agitated depression.
self-analysis
SYN: autoanalysis.
self-awareness
Realization of one's ongoing feeling and emotional experience; a major goal of all psychotherapy.
self-centeredness
SYN: autosynnoia.
self-commitment
Voluntary mental hospitalization.
self-control
1. Self-regulation of one's behavior in accordance with personal beliefs, goals, attitudes and societal expectations. 2. Use by an individual of active coping strategies to ...
self-differentiation
Differentiation resulting from the action of intrinsic causes.
self-discovery
In psychoanalysis, the freeing of the repressed ego in a person raised to be submissive to those around him.
self-efficacy
An individual's estimate or personal judgment of his or her own ability to succeed in reaching a specific goal, e.g., quitting smoking or losing weight, or a more general goal, ...
self-fertilization
Fecundation of the ovules by the pollen of the same flower, or of the ova by the spermatozoa of the same animal in hermaphrodite forms; denoting an extreme type of ...
self-infection
SYN: autoinfection.
self-knowledge
SYN: autognosis.
self-limited
Denoting a disease that tends to cease after a definite period; e.g., pneumonia.
self-love
SYN: narcissism.
self-poisoning
SYN: autointoxication.
self-regulation
A three-stage strategy patients are taught to use in order to end risky health-associated behaviors such as smoking and overeating: 1. self-monitoring (self-observation), the ...
self-stimulation
A technique for electrical stimulation of peripheral nerves, spinal cord, or brain by the patient to relieve pain.
self-tolerance
SYN: horror autotoxicus.
Selivanoff
Feodor, Russian chemist, *1859. See S. test.
sella
SYN: saddle (1). [L. saddle] - empty s. a s. turcica, often enlarged, that contains no discernible pituitary gland; may be primarily due to an incompetent sellar diaphragm with ...
Sella turcica
The "Turkish saddle" in which sits the pituitary gland. The sella is a bony box in the middle of the head. It was called the sella turcica (the Turkish saddle) because of ...
sellar
Relating to the sella turcica.
Sellick
Brian A., 20th century British anesthetist. See S. maneuver.
Selye
Hans, Austrian endocrinologist in Canada, 1907–1982. See adaptation syndrome of S..
SEM
Abbreviation for standard error of the mean.
semantics
A branch of semiotics : 1. The study of the significance and development of the meaning of words. 2. The study concerned with the relations between signs and their referents; the ...
Sémélaigne
Georges, 20th century French pediatrician. See Debré-S. syndrome, Kocher-Debré-S. syndrome.
semelincident
An obsolete term that means happening once only; said of an infectious disease, one attack of which confers permanent immunity. [L. semel, once, + incido, to happen, fr. cado, to ...
semen
1. [NA] The penile ejaculate; a thick, yellowish-white, viscid fluid containing spermatozoa; a mixture produced by secretions of the testes, seminal vesicles, prostate, ...
semenuria
The excretion of urine containing semen. SYN: seminuria, spermaturia.
semi-
One-half; partly. Cf.:hemi-. [L. semis, half]
semialdehyde
The monoaldehyde of a dicarboxylic acid, so called because half the COOH groups of the original acid are reduced to the aldehyde while the other half are unchanged; e.g., glutamic ...
semicanal
A half canal; a deep groove on the edge of a bone that, uniting with a similar groove or part of an adjoining bone, forms a complete canal. SYN: semicanalis. - s. of auditory ...
semicanalis
SYN: semicanal. [L.] - s. musculi tensoris tympani [TA] SYN: canal for tensor tympani muscle. - s. tubae auditivae [TA] SYN: canal for pharyngotympanic (auditory) tube. - s. ...
semicartilaginous
Composed partly of cartilage.
semicircular
Forming a half circle or an incomplete circle. SYN: semiorbicular.
semicoma
See semicomatose.
semicomatose
An imprecise term for a state of drowsiness and inaction, in which more than ordinary stimulation may be required to evoke a response, and the response may be delayed or ...
semiconductor
A metalloid, in one form or another, that conducts electricity more easily than a true nonmetal but less easily than a metal; e.g., silicon, germanium.
semiconscious
SYN: semicomatose.
semiconservative
The process of replicating DNA in which the two strands remain intact, separate, and are copied and one parental strand goes to each daughter cell.
semicrista
A small or imperfect ridge or crest. [ semi- + L. crista, crest, tuft] - s. incisiva SYN: nasal crest.
semidecussation
Incomplete decussation such as occurs in the human optic chiasm.
semiflexion
The position of a joint or segment of a limb midway between extension and flexion.
semilunar
SYN: lunar (2). [ semi- + L. luna, moon]
semilunare
Obsolete term for lunate (bone).
semiluxation
SYN: subluxation.
semimembranosus
See s. (muscle).
semimembranous
Consisting partly of membrane; denoting the semimembranosus muscle.
seminal
1. Relating to the semen. 2. Original or influential of future developments.
Seminal vesicles
Two structures about five centimeters long that are located behind the bladder and above the prostate gland. The seminal vesicles contribute fluid to the ejaculate.
semination
SYN: insemination.
seminiferous
Carrying or conducting the semen; denoting the tubules of the testis. [L. semen, seed (semen) + fero, to carry]
seminoma
A radiosensitive malignant neoplasm usually arising from germ cells in the testis of young male adults which metastasizes to the paraortic lymph node s; a counterpart of ...
seminomatous
Relating to a seminoma.
seminormal
Denoting a solution one-half the strength of a normal solution (0.5 n).
seminuria
SYN: semenuria.
semiopathic, semeiopathic
Denoting the disordered use of symbols. [G. semeion, sign, + pathos, disease]
semiorbicular
SYN: semicircular.
semiosis, semeiosis
The mental or symbolic process in which something ( e.g., word, symbol, nonverbal cue) functions as a sign for the organism. [G. semeiosis, fr. semeion, sign]
semiotic, semeiotic
1. Relating to semiotics. 2. Relating to signs, linguistic or bodily. [G. semeiotikos, fr. semeion, sign]
semiotics, semeiotics
1. The general philosophic theory of signs and symbols in communication, having three branches: syntactics, semantics, and pragmatics. 2. Obsolete term for symptomatology. ...
semipennate
1. Having a feather arrangement on one side; resembling one-half of a feather. 2. Denoting certain muscles with fibers running at an acute angle from one side of a tendon. SYN: ...
semipenniform
Penniform on one side. See semipennate muscle.
semipermeable
Freely permeable to water (or other solvent) but relatively impermeable to solutes. Depending on the context, it has been used to imply impermeability to all solutes except very ...
semipronation
The attitude or assumption of a partly prone position, as in Sims position.
semiprone
Denoting semipronation.
semiquinone
A free radical resulting from the removal of one hydrogen atom with its electron during the process of dehydrogenation of a hydroquinone to quinone or similar compound ( e.g., ...
semispinal
Half spinal; denoting muscles attached in part to the spinous processes of the vertebrae.
Semisulcospina
A genus of operculate snails (family Pleuroceriidae, subclass Prosobranchiata). An oriental form, S. libertina, is the first intermediate host of a number of trematodes, ...
semisulcus
A slight groove on the edge of a bone or other structure, which, uniting with a similar groove on the corresponding adjoining structure, forms a complete sulcus.
semisupination
The attitude or assumption of a partly supine position.
semisupine
Denoting semisupination.
semisynthetic
Describing the process of synthesizing a particular chemical utilizing a naturally occurring chemical as a starting material, thus obviating part of a total synthesis; e.g., the ...
semisystematic name
A name of a chemical of which at least one part is systematic and at least one part is not ( i.e., is trivial). For example, calciferol includes the -ol suffix denoting an —OH ...
semitendinosus
SYN: semitendinous. [L.]
semitendinous
Composed in part of tendon; denoting the semitendinosus muscle. SYN: semitendinosus. [L. semitendinosus]
semitertian
Partly tertian, partly quotidian; denoting a malarial fever in which two paroxysms occur on one day and one on the succeeding day.
semitrivial name
SYN: semisystematic name.
semivalent
Denoting the ability to form a one-electron bond.
Semon
Richard W., German biologist, 1859–1918. See S.- Hering theory.
Semple
Sir David, English physician, 1856–1937. See S. vaccine.
semustine
SYN: methyl- CCNU.
Senear
Francis E., U.S. dermatologist, 1889–1958. See S.- Usher disease, S.- Usher syndrome.
Senecio
1. A large genus of plants (family Compositae), many species of which contain alkaloids that produce hepatic necrosis. 2. A common weed of the eastern U.S., formerly used in the ...
senecioic acid
A polymer precursor and a precursor of isoprenoid and terpene compounds; the acid component of binapacryl in which it is esterified with 4,6-dinitro-2-(1-methylpropyl)phenol; the ...
seneciosis
Liver degeneration and necrosis caused by ingestion of plants of the genus Senecio, such as ragwort and groundsel; similar hepatotoxic properties have been observed after ...
senega
The dried root of Polygala s. (family Polygalaceae), a herb of eastern and central North America; an expectorant. SYN: Seneca snakeroot. [Seneca, an Indian tribe]
Senescence
Aging, the process of becoming old, or the state of being old. As we age, we senesce. No known substance can extend life, but here are some useful tips for improving the chances ...
senescent
Growing old.
Sengstaken
Robert W., U.S. neurosurgeon, *1923. See S.- Blakemore tube.
senile
Relating to or characteristic of old age. [L. senilis]
Senile chorea
A relatively mild and uncommon disorder that occurs in elderly adults and is characterized by choreic movements. Chorea refers to rapid complex body movements that look well ...
senility
Old age; a general term for a variety of organic disorders, both physical and mental, occurring in old age. [see senile]
senium
Rarely used term for old age; especially the debility of advanced age. [L. the feebleness of age, fr. seneo, to be old, feeble]
senna
The dried leaflets or legumes of Cassia acutifolia (Alexandrine s.) and C. angustifolia (Tinnevelly or Indian s.); a laxative. [Ar. sena]
sennoside A, sennoside B
Two anthraquinone glucosides that are the laxative principles of senna.
sensate
Able to perceive touch and other sensations; used in reference to patients who have had partial nerve or spinal cord injuries.
Sensation
In medicine and physiology, sensation refers to the registration of an incoming (afferent) nerve impulse in that part of the brain called the sensorium, which is capable of such ...
Sense
In biology and medicine, the faculty of sensory reception. The ability to convey specific types of external or internal stimuli to the brain and perceive them. Sensory reception ...
Sense, balance
Our sense of balance is regulated by a complex interaction of the following parts of the nervous system: {{}}The inner ears (also called the labyrinth) monitor the directions of ...
sensibility
The consciousness of sensation; the capability of perceiving sensible stimuli. [L. sensibilitas] - articular s. appreciation of sensation in joint surfaces. SYN: arthresthesia, ...
sensible
1. Perceptible to the senses. 2. Capable of sensation. 3. SYN: sensitive. 4. Having reason or judgment; intelligent. [L. sensibilis, fr. sentio, to feel, perceive]
sensiferous
Conducting a sensation. [L. sensus, sense, + fero, to carry]
sensigenous
Giving rise to sensation. [L. sensus, sense, + G. -gen, to produce]
sensimeter
An instrument that measures degrees of cutaneous sensation. [L. sensus, sense, + G. metron, measure]
sensing
quorum s. a phenomenon in bacteria that limits certain behaviors to occurring only above a certain population density.
sensitive
1. Capable of perceiving sensations. 2. Responding to a stimulus. 3. Acutely perceptive of interpersonal situations. 4. One who is readily hypnotizable. 5. Readily undergoing a ...
sensitivity
1. The ability to appreciate by one or more of the senses. 2. State of being sensitive. SYN: esthesia (2). 3. In clinical pathology and medical screening, the proportion of ...
sensitization
Immunization, especially with reference to antigens (immunogens) not associated with infection; the induction of acquired sensitivity or of allergy. - autoerythrocyte s. ...
sensitize
To render sensitive; to induce acquired sensitivity, to immunize. SEE ALSO: sensitized antigen.
sensitizer
1. A substance that causes allergy or dermatitis only after alteration ( sensitization) of the skin by previous exposure to that substance. 2. SYN: antibody.
sensitometry
In radiology, the procedure of measuring film response to radiation. [sensitivity + G. metron, measure]
sensomobile
Capable of movement in response to a stimulus.
sensomobility
The state of being sensomobile.
sensomotor
SYN: sensorimotor.
sensor
A device designed to respond to physical stimuli such as temperature, light, magnetism, or movement, and to transmit resulting impulses for interpretation, recording, movement, ...
sensori-
Sensory. [L. sensorius]
sensorial
Relating to the sensorium.
sensoriglandular
Relating to glandular secretion excited by stimulation of the sensory nerves.
sensorimotor
Both sensory and motor; denoting a mixed nerve with afferent and efferent fibers. SYN: sensomotor.
sensorimuscular
Denoting muscular contraction in response to a sensory stimulus.
Sensorium
The totality of those parts of the brain that receive, process and interpret sensory stimuli. The sensorium is the supposed seat of sensation, the place to which impressions from ...
sensorivascular
SYN: sensorivasomotor.
sensorivasomotor
Denoting contraction or dilation of the blood vessel s occurring as a sensory reflex. SYN: sensorivascular.
Sensory
Relating to sensation, to the perception of a stimulus and the voyage made by incoming (afferent) nerve impulses from the sense organs to the nerve centers. "Sensory" also is ...
Sensory integration
A form of occupational therapy in which special exercises are used to strengthen the patient’s sense of touch (tactile), sense of balance (vestibular), and sense of where the ...
sensual
1. Relating to the body and the senses, as distinguished from the intellect or spirit. 2. Denoting bodily or sensory pleasure, not necessarily sexual. [L. sensualis, endowed ...
sensualism
1. Domination by the emotions. 2. Indulgence in sensory pleasures. [L. sensualis, endowed with feeling, fr. sentio, to feel]
sensuality
The state or quality of being sensual.
sentient
Capable of, or characterized by, sensation. [L. sentiens, pres. p. of sentio, to feel, perceive]
sentiment
1. Feeling or emotion in relation to one idea. 2. A complex disposition or organization of a person with reference to a given object (a person, thing, or abstract idea) that ...
Sentinel lymph node
The first lymph node ("gland") to receive lymphatic drainage from a tumor. Which lymph node is the sentinel node in a given case is determined by injecting around the tumor a ...
Sentinel-lymph-node biopsy
Examination of the first lymph node ("gland") that receives lymphatic drainage from a tumor to learn whether that node does or does not have tumor cells within it. Which lymph ...
sentisection
Vivisection of an animal that is not anesthetized. [L. sentio, to feel, + sectio, a cutting]
sen′su la′to
In a broad sense. [L.]
sen′su stri′cto
In a strict sense. [L.]
separation
1. The act of keeping apart or dividing, or the state of being held apart. 2. In dentistry, the process of gaining slight spaces between the teeth preparatory to treatment. - jaw ...
separator
1. That which divides or keeps apart two or more substances or prevents them from mingling. 2. In dentistry, an instrument for forcing two teeth apart, so as to gain access to ...
Sephadex
Trade name for certain polydextrans used in column chromatography.
Sepsis
Commonly called a "blood stream infection." The presence of bacteria (bacteremia) or other infectious organisms or their toxins in the blood (septicemia) or in other ...
Sepsis, neonatal
A serious blood bacterial infection in an infant less than 4 weeks of age. Babies with sepsis may be listless, overly sleepy, floppy, weak, and very pale.
sequela
A condition following as a consequence of a disease. [L. s., a sequel, fr. sequor, to follow]
sequence
The succession, or following, of one thing or event after another. [L. sequor, to follow] - Alu sequences in the human genome a repeated, relatively conserved s. of about 300 bp ...
Sequence tagged site (STS)
A short (200 to 500 base pair) DNA sequence that occurs but once in the genome and whose location and base sequence are known. STSs are detectable by polymerase chain ...
Sequence, complementary
Nucleic acid sequence of bases that can form a double- stranded structure by matching base pairs. For example, the complementary sequence to C-A-T-G (where each letter stands ...
Sequence, conserved
A base sequence in a DNA molecule (or an amino acid sequence in a protein) that has remained essentially unchanged throughout evolution.
Sequence, finished DNA
A DNA sequence in which the bases are identified to an accuracy of no more than 1 error in 10,000 and are placed in the right order and orientation along a chromosome with ...
Sequence, intervening
An intervening sequence is the part of a gene that is initially transcribed from the DNA into RNA (specifically, into the primary RNA transcript) but then is excised (removed) ...
Sequence, regulatory
A sequence of bases in DNA that controls gene expression.
Sequencing
Learning the order of nucleotides (base sequences) in a DNA or RNA molecule or the order of amino acids in a protein. In the case of DNA sequencing, the precise ordering of the ...
sequential
Occurring in sequence.
sequestra
Plural of sequestrum.
sequestral
Relating to a sequestrum.
sequestration
1. Formation of a sequestrum. 2. Loss of blood or of its fluid content into spaces within the body so that it is withdrawn from the circulating volume, resulting in hemodynamic ...
sequestrectomy
Operative removal of a sequestrum. SYN: sequestrotomy. [ sequestrum + G. ektome, excision]
sequestrotomy
SYN: sequestrectomy. [ sequestrum + G. tome, incision]
sequestrum
A piece of necrotic tissue, usually bone, that has become separated from the surrounding healthy tissue. [Mod. L. use of Mediev. L. s., something laid aside, fr. L. sequestro, to ...
sequoiosis
Extrinsic allergic alveolitis caused by inhalation of redwood sawdust containing spores of Graphium, Pullularia, Aureobasidium, and other fungi. [Sequoia (genus name) for ...
SER
Abbreviation for somatosensory evoked response. SEE ALSO: evoked response.
Ser
Symbol for serine and its radical.
sera
Plural of serum.
seralbumin
SYN: serum albumin.
serendipity
Accidental discovery; in science, finding one thing while looking for something else, as in Fleming's discovery of penicillin. [coined by Horace Walpole and relates to The Three ...
Sergent
Emile, French physician, 1867–1943. See S. white line, Bernard-S. syndrome.
series
1. A succession of similar objects following one another in space or time. 2. In chemistry, a group of substances, either elements or compounds, having similar properties or ...
serine
2-Amino-3-hydroxypropanoic acid; the l-isomer is one of the amino acid s occurring in proteins. - s. deaminase SYN: threonine dehydratase. - s. dehydrase SYN: l-s. ...
seriograph
An instrument for making a series of radiographs; used, e.g., in cerebral angiography; an obsolete term for rapid film changer. [series + G. grapho, to write]
seriography
The making of a series of radiographs by means of the seriograph.
serioscopy
Formerly, a series of radiographs of a region taken from different directional points and later combined. [series + G. skopeo, to view]
seriscission
Rarely used term denoting division of the pedicle of a tumor or other tissue by a silk ligature. [L. sericum, silk, + scissio, a cleaving]
SERM
Abbreviation for selective estrogen receptor modulator.
sero-
Serum, serous. [L. serum, whey]
serocolitis
SYN: pericolitis. [Mod. L. serosa, serous membrane, + colitis]
Seroconversion
The development of detectable antibodies in the blood directed against an infectious agent. It normally takes some time for antibodies to develop after the initial exposure to the ...
serocystic
Relating to one or more serous cysts.
serodiagnosis
Diagnosis by means of serologic reactions using blood serum or other serous fluids in the body.
seroenteritis
SYN: perienteritis. [Mod. L. serosa, serous membrane, + enteritis]
seroepidemiology
Epidemiologic study based on the detection of infection by serologic testing.
serofast
SYN: serum-fast.
serofibrinous
Denoting an exudate composed of serum and fibrin.
serofibrous
Relating to a serous membrane and a fibrous tissue.
serogroup
1. A group of bacteria containing a common antigen, used in the classification of certain genera of bacteria. 2. A group of viral species that are antigenically closely related.
serologic
Relating to serology.
serology
The branch of science concerned with serum, especially with specific immune or lytic serums; to measure either antigens or antibodies in sera. [ sero- + G. logos, study]
seroma
A mass or tumefaction caused by the localized accumulation of serum within a tissue or organ. [ sero- + G. -oma, tumor]
seromembranous
Relating to a serous membrane.
seromucoid
General term for a mucoprotein (glycoprotein) from serum. - acid s. SYN: orosomucoid.
seromucous
Pertaining to a mixture of watery and mucinous material, such as that of certain glands.
seromyotomy
Incision in the wall of a hollow viscus that involves the serosa and muscularis but not the mucosa. [ serosa (1) + G. mys, muscle, + tome, a cutting]
seronegative
Lacking an antibody of a specific type in serum; used to mean absence of prior infection with a specific agent ( e.g., rubella virus), disappearance of antibodies after treatment ...
seropositive
Containing antibody of a specific type in serum; used to indicate presence of immunological evidence of a specific infection ( e.g., Lyme disease, syphilis) or presence of a ...
seropurulent
Composed of or containing both serum and pus; denoting a discharge of thin watery pus (seropus).
seropus
Purulent serum, i.e., pus largely diluted with serum.
seroreversion
A loss in serological reactivity; may be spontaneous or in response to therapy.
serosa
1. The outermost coat or serous layer of a visceral structure that lies in the body cavities of the abdomen or thorax; it consists of a surface layer of mesothelium reinforced ...
serosamucin
Mucoid material found in serous fluids, e.g., in ascitic or synovial fluid.
serosanguineous
Denoting an exudate or a discharge composed of or containing serum and also blood.
seroserous
1. Relating to two serous surfaces. 2. Denoting a suture, as of the intestine, in which the edges of the wound are infolded so as to bring the two serous surfaces in apposition.
Serositis
Inflammation of the serous tissues of the body. The serous tissues line the lungs (pleura), heart (pericardium), and the inner lining of the abdomen (peritoneum) and organs ...
serosity
1. A serous fluid or a serum. 2. The condition of being serous. 3. The serous quality of a liquid.
serosynovial
Relating to serum and also synovia.
serosynovitis
Synovitis attended with a copious serous effusion.
serotaxis
Edema of the skin induced by the application of a strong cutaneous irritant. [ sero- + G. taxis, an arranging]
serotherapy
Treatment of an infectious disease by injection of an antitoxin or serum containing specific antibody. SYN: serum therapy.
serotina
See decidua. [L. fem. of serotinus, late]
serotonergic
Related to the action of serotonin or its precursor l-tryptophan. [ serotonin + G. ergon, work]
serotonin
A vasoconstrictor, liberated by blood platelets, that inhibits gastric secretion and stimulates smooth muscle; present in relatively high concentrations in some areas of the ...
Serotype
The kind of microorganism as characterized by serologic typing (testing for recognizable antigens on the surface of the microorganism). * * * SYN: serovar. - heterologous s. an ...
serous
Relating to, containing, or producing serum or a substance having a watery consistency.
serovaccination
A process for producing mixed immunity by the injection of a serum to secure passive immunity, and by vaccination with a modified or killed culture to acquire active immunity ...
serovar
A subdivision of a species or subspecies distinguishable from other strains therein on the basis of antigenicity. SYN: serotype. [ sero- + variant]
serozyme
SYN: prothrombin.
serpentaria
The dried rhizome and roots of Aristolochia s., Virginia snakeroot, or of A. reticulata, Texas snakeroot (family Aristolochiaceae); a stomachic. SYN: snakeroot. [L. ...
serpiginous
Creeping; denoting an ulcer or other cutaneous lesion that extends with an arciform border; the margin has a wavy or serpent-like border. [Mediev. L. serpigo- (-gin-), ringworm, ...
serpigo
1. SYN: tinea. 2. SYN: herpes. 3. Any creeping or serpiginous eruption. [Mediev. L. s. (-gin-), ringworm, fr. L. serpo, to creep]
serpins
SYN: serine protease inhibitors, under inhibitor. [serine protease inhibitors]
serrate, serrated
Toothed. [L. serratus, fr. serra, a saw]
Serratia
A genus of motile, peritrichous, aerobic to facultatively anaerobic bacteria (family Enterobacteriaceae) which contain small, Gram-negative rods. Some strains are encapsulated. ...
serration
1. The state of being serrated or notched. 2. Any one of the processes in a serrate or dentate formation. [L. serra, saw]
serrefine
A small spring forceps used for approximating the edges of a wound or for temporarily closing an artery during an operation. [Fr.]
serrenoeud
An instrument for tightening a ligature. [Fr. serrer, to press, + noeud, knot]
Serres
Antoine E.R.A., French anatomist, 1786–1868. See S. angle, S. glands, under gland, rests of S., under rest.
serrulate, serrulated
Finely serrate. [L. serrula, a small saw, dim. of serra]
Sertoli
Enrico, Italian histologist, 1842–1910. See S. cell tumor, S. cells, under cell, S. columns, under column, S.-cell-only syndrome, S.-Leydig cell tumor, S.-stromal cell tumor.
sertraline
An antidepressant which exhibits selectivity for the blockade of serotonin reuptake; similar to fluoxetine.
Serum
The clear liquid that can be separated from clotted blood. Serum differs from plasma, the liquid portion of normal unclotted blood containing the red and white cells and ...
Serum glutamic pyruvic transaminase (SGPT)
An enzyme that is normally present in liver and heart cells. SGPT is released into blood when the liver or heart is damaged. The blood SGPT levels are thus elevated with liver ...
serum glutamic-oxaloacetic transaminase
SYN: aspartate aminotransferase.
serum glutamic-pyruvic transaminase
SYN: alanine aminotransferase.
serum-fast
1. Pertaining to a serum in which there is little or no change in the titer of antibody, even under conditions of treatment or immunologic stimulation. 2. Resistant to the ...
serumal
Relating to or derived from serum.
servation
The use or function of an organ.
Servetus, Servet, Servide
Miguel, Spanish anatomist and theologian, 1511–1553. See S. circulation.
servomechanism
1. A control system using negative feedback to operate another system. 2. A process that behaves as a self-regulatory device; e.g., the reaction of the pupil to light. [L. ...
seryl
A radical of serine.
sesame
Benne plant, an herb, Sesamum indicum (family Pedaliaceae), the seeds of which are used as a food, and which are the source of s. oil. [G. s., s., an Eastern leguminous plant] - ...
sesamoid
1. Resembling in size or shape a grain of sesame. 2. Denoting a s. bone. [G. sesamoeides, like sesame]
Sesamoid bone
A little bone embedded in a joint capsule or tendon. The kneecap (patella) is a sesamoid bone.
sesqui-
Prefix denoting 32; at one time used in chemistry to indicate a ratio of 3:2 between the two parts of a compound ( e.g., sesquisulfide, sesquibasic), but presently used only for ...
sesquihydrates
Compounds crystallizing with (nominally) 1.5 molecules of water.
sesquiterpenes
Compounds formed from three isoprene units; may be acyclic, mono-, di-, or tricyclic; synthesized from farnesylpyrophosphate ( E.G., trichothecin, nicin).
sessile
Having a broad base of attachment; not pedunculated. [L. sessilis, low-growing, fr. sedeo, pp. sessus, to sit]
sesterterpenes
Compounds formed from five isoprene units; often have a tricyclic structure; formed from geranylfarnesylpyrophosphate ( E.G., cochliobolin B). [L. sestertius, two and one-half, ...
set
1. A readiness to perceive or to respond in some way; an attitude which facilitates or predetermines an outcome; e.g., prejudice or bigotry as a s. to respond negatively, ...
set-up
1. The arrangement of teeth on a trial denture base. 2. A procedure in dental case analysis involving cutting off and repositioning of teeth in the desired positions on a ...
seta
A bristle or a slender, stiff, bristle-like structure. SYN: chaeta. [L. saeta or s., a stiff hair or bristle]
setaceous
1. Having bristles. 2. Resembling a bristle. [L. seta, a bristle]
Setaria
A nematode genus of the family Stephanofilariidae (superfamily Filarioidea). Adults are long and thin, typically occur in the peritoneal cavity, and produce sheathed ...
setback
A surgical operation for treatment of a bilateral cleft of the palate in which the premaxilla is moved posteriorly; the procedure is often accompanied by bone grafting.
setiferous
Bristly or having bristles. SYN: setigerous. [L. seta, bristle, + fero, to carry]
setigerous
SYN: setiferous. [L. seta, bristle, + gero, to bear]
seton
A wisp of threads, a strip of gauze, a length of wire, or other foreign material passed through the subcutaneous tissues or a cyst to form a sinus or fistula. [L. seta, ...
setting
Hardening, as of amalgam.
Seven-day measles
An acute highly contagious viral disease with fever, runny nose, cough, red eyes, and a spreading skin rash, the measles, (also known as rubeola) is a potentially disastrous ...

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