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Jobert de Lamballe
Antoine J., French surgeon, 1799–1867. See J. fossa, J. suture.
Jod-Basedow, jodbasedow
See Jod- Basedow phenomenon. [Ger. Jod, iodine, + K.A. von Basedow]
Joffroy
Alexis C., French physician, 1844–1908. See J. reflex, J. sign.
Jogger's nails
Very small semi-circular white spots on the nails. These spots may be found on the fingernails and, particularly, the toenails. The white spots on the nails reflect injury to ...
Johne
H. Albert, German physician, 1839–1910. See johnin.
johnin
A product used as a diagnostic agent, analogous to tuberculin but made from Mycobacterium paratuberculosis (the causative organism of Johne disease) grown in a broth medium ...
Johnson
Frank B., U.S. pathologist, *1919. See Dubin-J. syndrome. Frank C., U.S. pediatrician, 1894–1934. See Stevens-J. syndrome. Harry B., U.S. dentist. See J. method. Treat ...
Johnson-Stevens syndrome
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 ...
Joint
A joint is the area where two bones are attached for the purpose of motion of body parts. A joint is usually formed of fibrous connective tissue and cartilage. An articulation ...
Joint aspiration
A procedure whereby a sterile needle and syringe are used to drain joint fluid from the joint. This is usually done as an office procedure or at the bedside in the hospital. The ...
Joint Commission on Accreditation of Healthcare Organizations
A private, not-for-profit organization that evaluates and accredits health care organizations in the United States including hospitals and other organizations providing home care, ...
Joint hypermobility syndrome
A common benign childhood condition involving hypermobile joints (that can move beyond the normal range of motion). Symptoms include pains in knees, fingers, hips, and elbows. ...
Joint, AC
The AC (acromioclavicular) joint is located between the acromion (a projection of the scapula that forms the point of the shoulder) and the clavicle (the collar bone). This is ...
Joint, acetabular
The hip joint by another name. The acetabulum is the cup-shaped socket of the hip joint. It is a key feature of the pelvic anatomy. The head (upper end) of the femur (the ...
Joint, acromioclavicular
The acromioclavicular (AC) joint is located between the acromion (a projection of the scapula that forms the point of the shoulder) and the clavicle (the collar bone). This is ...
Joint, ankle
The ankle joint is complex. It is made up of two joints: the true ankle joint and the subtalar joint: The true ankle joint is composed of 3 bones: the tibia which forms the ...
Joint, atlas and axis
The joint between the atlas and axis bones. The atlas is the first cervical (neck) vertebra which is just under the head; it is named for Atlas, the Greek god who supported the ...
Joint, elbow
Three long bones meet in the middle portion of the arm at the elbow joint. The bone of the upper arm (humerus) meets both the ulna (the inner bone of the forearm) and radius (the ...
Joint, knee
The knee joint has three parts. The thigh bone (the femur) meets the large shin bone (the tibia) to form the main knee joint. This joint has an inner (medial) and an outer ...
Joint, patellofemoral
One of the knee joints. The knee has three parts. The thigh bone (femur) meets the large shin bone (tibia) forming the main knee joint. This joint has an inner (medial) and an ...
Joint, shoulder
The shoulder has two main bones: the scapula (the shoulder blade) and the humerus (the long bone of the upper arm). The end of the scapula, called the glenoid, is a socket into ...
Joint, tempero-mandibular
Joint that hinges the lower jaw (mandible) to the skull. Abbreviated TMJ or TM joint.
Joint, TM
The joint that hinges the lower jaw (mandible) to the skull.
Joints of the body, principal
The principal joints of the human body include the following: Acromioclavicular Ankle (tibia-fibula and talus) Atlas and axis Atlas and occipital Calcaneocuboid ...
Jolles
Adolf, Austrian chemist, 1863–1944. See J. test.
Jolly
Friedrich, German neurologist, 1844–1904. See J. reaction. Justin, French histologist, 1870–1953. See J. bodies, under body, Howell-J. bodies, under body.
Jones
Ernest, British psychiatrist, 1879–1958. See Ross-J. test. T. Duckett, 20th century U.S. cardiologist, 1899–1954. See J. criteria, under criterion. Henry Bence. See Bence ...
Jonesia dentrificans
A species of motile, Gram-positive bacteria formerly classified as LIsteria dendrificans; the only member of the genus Jonesia.
Jonnesco, Ionescu
Thomas, Roumanian surgeon, 1860–1926. See J. fossa.
Joseph
Jacques, German surgeon, 1865–1934.
Joubert
Marie, 20th century Canadian neurologist. See J. syndrome.
Joule
James P., British physicist, 1818–1889. See j., J. equivalent.
joule
A unit of energy; the heat generated, or energy expended, by an ampere flowing through an ohm for 1 sec; equal to 107 ergs and to a newton-meter. It is an approved multiple of ...
Journal of the American Medical Association (JAMA)
JAMA, which began publication in 1883, now bills itself as "the world's best-read medical journal". However one defines "best-read", JAMA clearly ranks as one of the two leading ...
Journal of the National Cancer Institute
A medical journal sponsored by the National Cancer Institute (NCI), one of the National Institutes of Health (NIH), in the U.S. and published by Oxford University Press in the U.K.
Journal, medical, first American
The first U.S. medical journal, the Medical Repository was founded in 1797 and published quarterly until 1824. It was “the first serious attempt in this country to present the ...
Journals, medical
In 1665 the Royal Society in England published one of the first 2 scientific journals in the world: the "Philosophical Transactions of the Royal Society." The other was the ...
Judkins
Melvin P., U.S. radiologist, 1922–1985; pioneer in coronary angiography and angioplasty. See J. technique.
juga
Plural of jugum.
jugal
1. Connecting; yoked. 2. Relating to the zygomatic bone. [L. jugalis, yoked together, fr. jugum, a yoke]
jugale
A craniometric point at the union of the temporal and frontal processes of the zygomatic bone. SYN: jugal point.
jugomaxillary
Relating to the zygomatic bone and the maxilla.
Jugular
The principal vein in the front of either side of the neck. The word comes from the Latin jugulum meaning throat. The jugular is "the vein of the throat" or in ancient ...
Jugular vein
The jugular veins are in the neck and drain blood from the head, brain, face and neck and convey it toward the heart. The external jugular vein collects most of the blood from ...
Jugular vein, external
The more superficial of the two jugular veins in the neck that drain blood from the head, brain, face and neck and convey it toward the heart. The external jugular vein ...
Jugular vein, internal
The deeper of the two jugular veins in the neck that drain blood from the head, brain, face and neck and convey it toward the heart. The internal jugular vein collects blood ...
jugulum
SYN: throat (2).
jugum
1. A ridge or furrow connecting two points. SYN: yoke [TA]. 2. A type of forceps. [L. a yoke] - juga alveolaria [TA] SYN: alveolar yokes, under yoke. - juga cerebralia ...
juice
1. The interstitial fluid of a plant or animal. 2. A digestive secretion. [L. jus, broth] - appetite j. gastric j. secreted upon the sight or smell of food and at the time of ...
Jukes
The pseudonym for a celebrated family, most of whose members were social misfits, feebleminded, and degenerate. the subject of arguments for now discredited theories of genetic ...
junctio
junction. - j. anorectalis [TA] SYN: anorectal junction.
junction
The point, line, or surface of union of two parts, mainly bones or cartilages. SYN: juncture. SYN: junctura (2) [TA], junctio. - adhering junctions intercellular junctions, ...
junctura
1. SYN: joint. 2. SYN: junction. [L. a joining] - j. cartilaginea [TA] SYN: cartilaginous joint. - j. fibrosa [TA] SYN: fibrous joint. - j. lumbosacralis SYN: lumbosacral ...
juncture
SYN: junction.
June cold
A popular term for hay fever. Although the symptoms of a "June cold" may be quite similar to those of a real cold, the term "June cold" is a misnomer. Unlike a real cold, it is ...
Jung
Carl Gustav, Swiss psychiatrist and psychologist, 1875–1961. See jungian psychoanalysis. Karl G., Swiss anatomist, 1793–1864. See J. muscle.
jungian
The psychological system or the psychoanalytic form of treatment deriving from it; developed by Carl Gustav Jung.
Jüngling
Adolph O., German surgeon, 1884–1944. See J. disease.
juniper
The dried ripe fruit of Juniperus communis (family Pinaceae). [L. the j. tree] - j. berry oil SYN: oil of j.. - j. tar the empyreumatic volatile oil obtained from the woody ...
Junk DNA
Regions of the DNA that have no apparent function. The term "junk DNA" is a disparaging one, expressing some of the disappointment felt by geneticists when they first gazed upon ...
jurisprudence
The science of law, its principles and concepts. [L. juris prudentia, knowledge of law] - dental j. SYN: forensic dentistry. - medical j. SYN: forensic medicine.
justice
The ethical principle that persons who have similar circumstances and conditions should be treated alike; sometimes known as distributive j.. [L. justitia, fr. jus, right, law]
justo major
See pelvis j..
justo minor
See pelvis j..
Juvenile
Between infantile and adult as, for example, in juvenile rheumatoid arthritis (onset before age 16 years).
juvenile delinquent
A minor who cannot be controlled by parental authority and commits antisocial or criminal acts, such as vandalism, violence, or robbery.
Juvenile laryngeal papillomatosis
Juvenile laryngeal papillomatosis involves the growth of numerous warty growths on the vocal cords in children and young adults. A baby can contract juvenile laryngeal ...
Juxta- (prefix)
The Latin preposition meaning "near, nearby, close." Juxta- appears commonly as a prefix in (and outside) medicine. Some examples in medical usage include the following: ...
Juxtaarticular
The prefix "juxta-" comes from the Latin preposition meaning near, nearby, close. Juxtaarticular is composed of juxta, near + articular, from the Latin " articulus", a joint = ...
juxtacrine
A mode of hormone action that requires the cell producing the effector to be in direct contact with the cell containing the appropriate receptor. [L. juxta, close to, + G. krino, ...
juxtaepiphysial
Close to or adjoining an epiphysis.
juxtaglomerular
Close to or adjoining a renal glomerulus.
Juxtaglomerular apparatus
The prefix "juxta-" comes from the Latin preposition meaning near, nearby, close. The juxtaglomerular apparatus is a collective term referring to the cells near a structure ...
juxtallocortex
O. Vogt collective term for several regions of the cerebral cortex which occupy an intermediate position between the isocortex and the allocortex.
juxtamedullary
Close to or adjoining the medullary border.
Juxtaposition
The prefix "juxta-" comes from the Latin preposition meaning near, nearby, close. Juxtaposition is thus the act of placing two or more things side by side or the state of being so ...
Juxtapyloric
The prefix "juxta-" comes from the Latin preposition meaning near, nearby, close. Juxtapyloric thus means near the pylorus (the muscular area at the junction of the stomach and ...
Juxtaspinal
Near the spinal column. The prefix "juxta-" comes from the Latin preposition meaning near, nearby, close. Other examples of terms starting with "juxta-" include. for examples, ...
Juxtavesicular
Near the bladder. The prefix "juxta-" comes from the Latin preposition meaning near, nearby, close and " vesicular" refers to the bladder (the vesicle). Other examples of terms ...
K
1. Symbol for potassium; kalium; phylloquinone; kelvin; lysine; lysyl. 2. In optics, the coefficient of scleral rigidity. 3. In contact lens fitting, the radius of ...
k
Symbol for kilo-. Symbol for rate constants, under constant or velocity constants, under constant; Boltzmann constant.
K (potassium)
K is the symbol for potassium, the major positive ion (cation) found inside of cells. The chemical notation for potassium is K+. The proper level of potassium is essential for ...
K blood group, k blood group
See Kell blood group, Blood Groups appendix.
Ka
Symbol for dissociation constant of an acid; association constant (2) (often used with gases).
kabure
SYN: schistosomiasis japonica.
Kaes
Theodor, German neurologist, 1852–1913. See line of K., band of K.- Bechterew.
kafindo
SYN: onyalai.
kainic acid
A glutamate analog that exhibits powerful and long-acting excitatory and toxic activity on neurons; used as a research tool in neurobiology to destroy neurons and as an ...
kairomones
Chemical messengers that are emitted by organisms of one species but benefit or affect organisms of another species; for example, a flower scent used to attract or repel other ...
Kaiserling
Karl, German pathologist, 1869–1942. See K. fixative.
kak-, kako-
See caco-.
kal-, kali-
Potassium; sometimes improperly written as kalio-. [L. kalium, potassium]
kala azar
SYN: visceral leishmaniasis. [Hind. kala, black, + azar, poison]
Kala-azar
A chronic and potentially fatal parasitic disease of the viscera (the internal organs, particularly the liver, spleen, bone marrow and lymph nodes) due to infection by the ...
kalemia
The presence of potassium in the blood.
kaliopenia
Insufficiency of potassium in the body. SEE ALSO: hypokalemia. [Mod. L. kalium, potassium, + G. penia, poverty]
kaliopenic
Relating to kaliopenia.
Kalischer
Siegfried, German physician, *1862. See Sturge-K.- Weber syndrome.
kalium
SYN: potassium. [Mod. L. fr. Ar. quali, potash]
kaliuresis
SYN: kaluresis.
kaliuretic
SYN: kaluretic.
kallidin
Bradykinin with a lysyl group attached to the amino terminus; this group can be removed by an aminopeptidase in the blood to yield bradykinin; a decapeptide vasodilator. ...
Kallikak
The pseudonym for a celebrated family with two lines of descendants, one of respectable citizens, the other of social misfits and criminals. SEE ALSO: Jukes.
kallikrein
A group of enzymes ( e.g., plasma, tissue, pancreatic, urinary, submandibular k.) that can convert kininogen by proteolysis to bradykinin or kallidin; trypsin and plasmin ...
Kallmann
Franz Josef, U.S. medical geneticist and psychiatrist, 1897–1965. See K. syndrome.
kaluresis
The increased urinary excretion of potassium. SYN: kaliuresis. [Mod. L. kalium, potassium, + G. ouresis, urination]
kaluretic
Relating to, causing, or characterized by kaluresis. SYN: kaliuretic.
Kandori
Fumio, Japanese ophthalmologist, *1904. See fleck retina of K..
Kanner
Leo, Austrian psychiatrist in U.S., 1894–1981. See K. syndrome.
Kanner syndrome
(Also called autism). A spectrum of neuropsychiatric disorders characterized by deficits in social interaction and communication, and unusual and repetitive behavior. Some, but ...
kanyemba
SYN: chiufa.
kaodzera
A disease prevalent in Zimbabwe (formerly Rhodesia), similar to sleeping sickness, caused by Trypanosoma rhodesiense. SEE ALSO: Rhodesian trypanosomiasis.
kaolin
Hydrated aluminum silicate; when powdered and freed from gritty particles by elution, k. is used as a demulcent and adsorbent; in dentistry, it is used to add toughness and ...
kaolinosis
Pneumonoconiosis caused by the inhalation of clay dust.
Kaposi
Moritz, (born Moritz Kohn), Hungarian dermatologist in Austria, 1837–1902. See K. varicelliform eruption, K. sarcoma.
kappa
1. The tenth letter in the Greek alphabet. 2. In chemistry, denotes the position of a substituent located on the tenth atom from the carboxyl or other functional group. 3. A ...
kappacism
Faulty pronunciation of the “k” sound. [G. kappa, the letter κ]
Karman cannula
See under cannula.
Karmen
Albert, U.S. internist and clinical pathologist, *1930. See K. unit.
Karnofsky
David A., 20th century U.S. physician, †1970. See K. scale.
Kartagener
Manes, Swiss physician, 1897–1975. See K. syndrome, K. triad.
Kartagener syndrome
A genetic syndrome characterized by sinusitis, bronchiectasis (widening and inflammation of the bronchi), dextrocardia (heart on the right side), and infertility. The syndrome ...
karyo-
Nucleus. Cf.:nucleo-. [G. karyon, nucleus]
karyochrome
A nerve cell body having little or no Nissl substance visible but a nucleus that stains intensely. [ karyo- + G. chroma, color]
karyoclasis
SYN: karyorrhexis. [ karyo- + G. klasis, a breaking]
Karyocyte
Any cell that possesses a nucleus. A neuron (nerve cell) is a karyocyte; it has a nucleus. A mature erythrocyte (red blood cell) is not a karyocyte; it lacks a nucleus. The term ...
karyogamic
Relating to or marked by karyogamy.
karyogamy
Fusion of the nuclei of two cells, as occurs in fertilization or true conjugation. [ karyo- + G. gamos, marriage]
karyogenesis
Formation of the nucleus of a cell. [ karyo- + G. genesis, production]
karyogenic
Relating to karyogenesis; forming the nucleus.
karyogonad
SYN: micronucleus (2). [ karyo- + G. gone, generation, descent]
karyogram
SYN: karyotype.
karyology
The branch of cytology that deals with the study of the cell nucleus, its organelles, structures, and functions. [karyo + -logy]
karyolymph
The presumably fluid substance or gel of the nucleus in which stainable elements were believed to be suspended; much that was formerly considered to be k. is now known to be ...
karyolysis
Apparent destruction of the nucleus of a cell by swelling and the loss of affinity of its chromatin for basic dyes. [ karyo- + G. lysis, dissolution]
karyolytic
Relating to karyolysis.
karyomere
A vesicle containing only a small part of the typical nucleus, usually following an abnormal mitosis. [ karyo- + G. meros, part]
karyomicrosome
One of the minute particles or granules making up the substance of the cell nucleus. SYN: nucleomicrosome. [ karyo- + G. mikros, small, + soma, body]
karyomitome
The nuclear chromatin network. [ karyo- + mitosis + -ome]
karyomorphism
1. Development of the nucleus of a cell. 2. Denoting the nuclear shapes of cells, especially leukocytes. [ karyo- + G. morphe, form]
karyon
SYN: nucleus (1). [G. k., a nut, kernel]
karyophage
An intracellular parasite that feeds on the host nucleus. [ karyo- + G. phago, to devour]
karyoplasm
Rarely used term for nucleoplasm.
karyoplasmolysis
SYN: achromatolysis.
karyoplast
A cell nucleus surrounded by a narrow band of cytoplasm and a plasma membrane. [ karyo- + G. plastos, formed]
karyoplastin
The achromatic nuclear material that forms the spindle apparatus.
karyopyknosis
Cytologic characteristics of the superficial or cornified cells of stratified squamous epithelium in which there is shrinkage of the nuclei and condensation of the chromatin ...
karyopyknotic
Pertaining to or causing karyopyknosis.
karyorrhexis
Fragmentation of the nucleus whereby its chromatin is distributed irregularly throughout the cytoplasm; a stage of necrosis usually followed by karyolysis. SYN: karyoclasis. [ ...
karyosome
A mass of chromatin often found in the interphase cell nucleus representing a more condensed zone of chromatin filaments. SYN: chromatin nucleolus, chromocenter, false ...
karyostasis
SYN: interphase. [ karyo- + G. stasis, a standing still]
karyotheca
SYN: nuclear envelope. [ karyo- + G. theke, box, sheath]
karyotype
The chromosome characteristics of an individual cell or of a cell line, usually presented as a systematized array of metaphase chromosomes from a photomicrograph of a single ...
Karyotype, spectral (SKY)
A visualization of all of the chromosomes in the genome all together with each chromosome labeled with a different color. The SKY technique is useful for identifying chromosome ...
Karyotyping, flow
Use of flow cytometry to analyze and/or separate chromosomes on the basis of their DNA content. Flow cytometry detects the light- absorbing or fluorescing properties of ...
karyozoic
Denoting a parasite inhabiting the cell nucleus of its host. [ karyo- + G. zoon, animal]
Kasabach
Haig H., U.S. physician, 1898–1943. See K.- Merritt syndrome.
Kasai
Morio, Japanese surgeon. See K. operation.
kasai
A form of anemia occurring in the Congo River region, with associated edema of subcutaneous tissues, depigmented regions in the skin, and various gastrointestinal disturbances; ...
Kashin
Nikolai I., Russian orthopedist, 1825–1872. See K.-Bek disease.
Kasten
Frederick H., U.S. histochemist and cell biologist, *1927. See K. fluorescent Schiff reagents, under reagent, K. fluorescent Feulgen stain, K. fluorescent PAS stain.
kat
Abbreviation for katal.
kata-
Alternative spelling for cata-; down. [G. kata, down]
katal
Unit of catalytic activity equal to 1 mol of product formed (or substrate consumed) per second, as of the amount of enzyme that catalyzes transformation of 1 mol of substrate ...
katathermometer
An alcohol-filled thermometer of specified design that is heated above ambient temperature and then allowed to cool; the time taken to cool between specified temperatures is a ...
Katayama
Kunika, Japanese physician, 1856–1931. See K. fever, K. test.
kathexis
A rare disorder characterized by bone marrow retention of myeloid elements leading to severe peripheral neutropenia; neutrophils have a distinctly abnormal appearance; Gm-CSF ...
Katz
Sir Bernard, German-British neurophysiologist and Nobel laureate, *1911. See Goldman-Hodgkin-K. equation.
kava
1. SYN: methysticum. 2. SYN: yaqona. [Tongan and Marquesan, Litter]
Kawasaki
Tomisaku, 20th century Japanese pediatrician. See K. disease, K. syndrome.
Kawasaki disease
This disease has nothing to do with the motor bike of the same name. It is a syndrome of unknown origin that mainly affects young children, causing fever, reddening of the eyes ...
Kay
Herbert D., British biochemist, *1893. See Jenner-K. unit.
Kayser
Bernhard, German physician, 1869–1954. See K.- Fleischer ring.
Kazanjian
Varaztad H., Armenian otorhinolaryngologist in the U.S., 1879–1974. See K. operation.
Kb
Symbol for dissociation constant of a base.
kb
Abbreviation for kilobase.
kc
Abbreviation for kilocycle.
kcal
Abbreviation for kilogram calorie; kilocalorie.
kcat
The overall catalytic rate of an enzyme; symbol for turnover number; Vmax divided by the total enzyme concentration.
Kd
Symbol for dissociation constant.
Kearns
Thomas P., U.S. ophthalmologist, *1922. See K.- Sayre syndrome.
Keating-Hart
Walter V., French physician, 1870–1922. See Keating-Hart method.
keel
Paratyphoid or salmonellosis of ducklings.
Keen
William W., U.S. surgeon, 1837–1932. See K. operation.
Kegel
A.H., 20th century U.S. gynecologist. See K. exercises, under exercise.
Kegel exercises
Exercises designed to increase muscle strength and elasticity in the female pelvis. Kegel exercises may be recommended for treatment of an incompetent cervix, vaginal ...
Kehr
Hans, German surgeon, 1862–1916. See K. sign.
Keith
Sir Arthur, Scottish anatomist, 1866–1955. See K. bundle, K. node, K. and Flack node.
kelectome
An instrument used, like the harpoon, to remove a specimen of tumor substance for examination. [G. kele, tumor, + ektome, excision]
Kell blood group
See Blood Groups appendix.
Keller
William Lordan, U.S. surgeon, 1874–1959. See K. bunionectomy.
Kellie
George, 18th century Scottish anatomist. See Monro-K. doctrine.
Kelly
Howard A., U.S. gynecologist, 1858–1943. See K. clamp, K. operation, K. rectal speculum. Adam B., British otolaryngologist, 1865–1941. See Paterson-K. syndrome, ...
Keloid
A scar that doesn't know when to stop. When the skin is injured, cells grow back to fill in the gap. Somehow, they normally "know" when the scar tissue is level with the skin, at ...
keloidosis
Multiple keloids.
kelosomia
SYN: celosomia.
Kelvin
Lord William Thomson, Scottish physicist, 1824–1907. See k., K. scale.
kelvin
A unit of thermodynamic temperature equal to 273.16−1 of the thermodynamic temperature of the triple point of water. See K. scale. [Lord K.]
Kendall
J., 20th century U.S. pathologist. See Abell-K. method. See Abell-K. method.
Kennedy
Edward, U.S. dentist, *1883. See K. classification. Robert Foster, U.S. neurologist, 1884–1952. See K. syndrome, Foster K. syndrome. William, U.S. neurologist. See K. disease.
Kenny
Elizabeth, Australian nurse, 1880–1952. See K. treatment.
keno-
See ceno- (3). [G. kenos, empty]
Kent
Albert F.S., English physiologist, 1863–1958. See K. bundle, K.-His bundle.
kephalin
SYN: cephalin.
Keq
Symbol for equilibrium constant.
Kerandel
Jean F., French physician, 1873–1934. See K. sign.
kerasin
Obsolete term for glucocerebroside. SYN: cerasin.
kerat-
See kerato-.
keratan sulfate
A type of sulfated mucopolysaccharide containing d-galactose in place of the uronic acid of hyaluronic acid or chondroitin; also containing unsulfated and 6-sulfated ...
keratectasia
SYN: keratoectasia. [kerato- + G. ektasis, extrusion]
Keratectomy
Removal of part of the cornea. This can be done by surgical excision or by laser. One such laser procedure is PRK (photorefractive keratectomy). * * * An operation done to ...
Keratectomy, photorefractive (PRK)
A kind of laser eye surgery designed to change the shape of the cornea to eliminate (or reduce) the need for glasses and contact lenses. The laser is used to remove the outer ...
keratein
The easily digested reduction product of keratin, in which the disulfide links are reduced to SH groups, the individual peptide chains being separated.
Keratin
Protein in the upper layer of the skin, hair, nails and animal horns. The word keratin comes from the Indo-European ker meaning horn. * * * Collective name for a group of proteins ...
keratinases
Hydrolases catalyzing the hydrolysis of keratin; each having slightly different specificities.
keratinization
Keratin formation or development of a horny layer; may also apply to premature formation of keratin. SYN: cornification.
keratinized
Having become horny. SYN: cornified.
keratinocyte
A cell of the living epidermis and certain oral epithelium that produces keratin in the process of differentiating into the dead and fully keratinized cells of the stratum ...
keratinophilic
Denoting fungi that use keratin as a substrata, e.g., dermatophytes. [keratin + Gr. philos, love, attraction, + -ic]
keratinosome
A membrane-bound granule, 100 to 500 nm in diameter, located in the upper layers of the stratum spinosum of certain stratified squamous epithelia. SYN: lamellar granule, ...
keratinous
1. Relating to keratin. 2. SYN: horny.
keratitis
Inflammation of the cornea. SEE ALSO: keratopathy. [kerato- + G. -itis, inflammation] - actinic k. a reaction of the cornea to ultraviolet light. - deep punctate k. sharply ...
Keratitis, rosacea
A condition affecting the eyes in about half of all people with rosacea. Symptoms include burning and grittiness of the eyes (conjunctivitis). If this is not treated,
Keratitis-ichthyosis-deafness syndrome
An inherited disorder in which affected persons have: {{}}Keratitis — gradual destruction of the cornea of the eye, sometimes leading to blindness Ichthyosis — localized areas ...
Kerato- (prefix)
Kerato- is a confusing prefix since it can refer to the cornea (as in keratitis and keratocornea) or to "horny" tissue (as in keratin and keratosis).
kerato-, kerat-
1. The cornea. 2. Horny tissue or cells. SEE ALSO: cerat-, cerato-. [G. keras, horn]
keratoacanthoma
A rapidly growing tumor that may be umbilicated, and usually occurs on exposed areas of the skin in elderly white men, which invades the dermis but remains localized and usually ...
keratoangioma
SYN: angiokeratoma.
keratocele
Hernia of Descemet membrane through a defect in the outer layers of the cornea. [kerato- + G. kele, hernia]
keratoconjunctivitis
Inflammation of the conjunctiva and of the cornea. - atopic k. a chronic papillary inflammation, of the conjunctiva showing Trantas dots in a patient with a history of ...
Keratoconus
Cone-shaped cornea with the apex of the cone being forward. Also called conical cornea. * * * A conical protrusion of the cornea caused by thinning of the stroma; usually ...
keratocricoid
SYN: ceratocricoid.
keratocyst
Odontogenic cyst derived from remnants of the dental lamina and appearing as a unilocular or multilocular radiolucency which may produce jaw expansion; epithelial lining is ...
keratocyte
The fibroblastic stromal cell of the cornea.
keratoderma
1. Any horny superficial growth. 2. A generalized thickening of the horny layer of the epidermis. [kerato- + G. derma, skin] - k. blennorrhagica SYN: keratosis ...
keratodermatitis
Inflammation with proliferation of the horny layer of the skin. [kerato- + G. derma, skin, + -itis, inflammation]
Keratodermia blennorrhagicum (KB)
A skin disease of the palms and soles that occurs in patients with Reiter's syndrome. Reiter's is a systemic rheumatic disease, "systemic" meaning that it can and does affect ...
keratoectasia
A bulging forward of the cornea. SYN: corneal ectasia, keratectasia.
keratoelastoidosis
Hyperkeratosis and degeneration of dermal elastic tissue. SEE ALSO: acrokeratoelastoidosis. [kerato- + Mod. L. elasticus, elastic, fr. G. elastikos, propulsive, fr. elauno, to ...
keratoepithelioplasty
A surgical procedure for the repair of persistent corneal epithelial defects. All corneal epithelium is removed from the recipient cornea, and small pieces of donor cornea, with ...
keratogenesis
Production or origin of horny cells or tissue. [kerato- + G. genesis, production]
keratogenetic
Relating to keratogenesis.
keratogenous
Causing a growth of cells that produce keratin and result in the formation of horny tissue, such as fingernails, scales, feathers, etc.
keratoglobus
Congenital anomaly consisting of an enlarged anterior segment of the eye. SYN: anterior megalophthalmos, megalocornea. [kerato- + L. globus, ball]
keratography
A record or portrayal of the cornea. See photokeratoscope, videokeratoscope. [kerato- + G. grapho, to write]
keratohyal
SYN: ceratohyal.
keratohyalin
The substance in the large basophilic granules of the stratum granulosum of the epidermis rich in proline and sulfhydryl groups. [kerato- + hyalin]
keratoid
Resembling corneal tissue. [kerato- + G. eidos, resemblance]
keratoleptynsis
1. SYN: gutter dystrophy of cornea. 2. An operation for removing the surface of the cornea and replacement by bulbar conjunctiva for cosmetic reasons. [kerato- + G. leptynsis, ...
keratoleukoma
A white corneal opacity. [kerato- + G. leukos, white, + -oma, growth]
keratolysis
1. Separation or loosening of the horny layer of the epidermis. 2. Specifically, a disease characterized by a shedding of the epidermis recurring at more or less regular ...
keratolytic
Relating to keratolysis.
Keratoma
An area of hardened skin, usually called a callus. * * * 1. SYN: callosity. 2. A horny tumor. [kerato- + G. -oma, tumor] - k. disseminatum SYN: punctate keratoderma. - k. ...
keratomalacia
Dryness with ulceration and perforation of the cornea, with absence of inflammatory reactions, occurring in cachectic children; results from severe vitamin A deficiency. SYN: ...
keratome
A knife used for incising the cornea. SYN: keratotome.
keratometer
An instrument for measuring the curvature of the anterior corneal surface. SYN: ophthalmometer. [kerato- + G. metron, measure]
keratometry
Measurement of the radii of corneal curvature.
keratomileusis
Surgical alteration of refractive error by changing the shape of a deep layer of the cornea : the anterior lamella is peeled back, frozen, and recarved on its back surface on a ...
keratomycosis
Fungal infection of the cornea.
keratonosis
Any abnormal noninflammatory, usually hypertrophic, affection of the horny layer of the skin. [kerato- + G. -osis, condition]
keratopachyderma
A syndrome of congenital deafness with development of hyperkeratosis of the skin of the palms, soles, elbows, and knees in childhood, and with bandlike constrictions of the ...
keratopathia
SYN: keratopathy. - k. guttata wartlike endothelial excrescence on the posterior surface of the cornea.
keratopathy
Any corneal disease, damage, dysfunction, or abnormality. SYN: keratopathia. [kerato- + G. pathos, suffering, disease] - band-shaped k. a horizontal, gray, interpalpebral ...
keratophakia
Implantation of a donor cornea or plastic lens within the corneal stroma to modify refractive error. SYN: keratophakic keratoplasty. [kerato- + G. phakos, lens]
keratoplasia
The formation or renewal of a horny layer. [kerato- + G. plasso; to fashion]

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