August Friedrich Leopold, German biologist, 1834–1914. See weismannism.
Theory of the noninheritance of acquired characteristics.
Nathan, Austrian physician, 1851–1883. See W. sign.
Soma, U.S. physician, 1898–1942. See Charcot-W.- Baker syndrome, Mallory-W. lesion, Mallory-W. syndrome, Mallory-W. tear.
Josias, German-Russian anatomist in St. Petersburg, 1702–1747. See W. cartilage, W. cord, W. fibers, under fiber, W. foramen, W. ligament, apparatus ligamentosus weitbrechti.
Lisa, Swedish neurologist, *1909. See Kugelberg-W. disease, Wohlfart-Kugelberg-W. disease.
William H., U.S. pathologist, 1850–1934. See W. bacillus.
Hermann, German anthropologist and anatomist, 1822–1898. See W. angle.
A philosophy of life and personal hygiene that views health as not merely the absence of illness but the fullest realization of one's physical and mental potential, as achieved ...
G.C., 20th century British dermatologist. See W. syndrome.
Michael Vernon, 20th century English physician. See Muckle-W. syndrome.
A red bump, ridge or swelling of unbroken skin raised by a stinging blow or by an allergic reaction to foods, drugs or insect bites, as in hives (urticaria). The word "welt" has ...
Old term for pilar cyst. [A.S.]
Karel F., Dutch internist, 1864–1940. See W. block, W. period, W. phenomenon.
Joseph, German anatomist and physiologist, 1768–1808. See W. ventricle.
Johann J., 1620–1695. See W. glands, under gland.
Guido, Austrian neurologist, 1862–1919. See W.-Hoffmann disease, W.-Hoffmann muscular atrophy.
Paul G., German physician, 1699–1767. See Werlhof disease.
Paul L., U.S. internist, 1898–1975. See W. syndrome.
Friedrich C.G., German anatomist and physician, 1798–1835. See W. commissure, W. decussation.
F.F., early 20th century German chemist. See W. test.
Otto, German physician, *1879. See W. syndrome.
A premature aging disease that begins in adolescence or early in adulthood and results in apparent old age by 30-40 years of age. The characteristic features of Werner syndrome ...
Named for the German physician Heinrich Werner (who did not describe Werner's premature aging syndrome) and the Swiss physician Wilhelm His, Jr. (who did describe the bundle of ...
Karl, German neurologist, 1848–1905. See W. aphasia, W. area, W. center, W. disease, W. encephalopathy, W. field, W. radiation, W. reaction, W. region, W. sign, W. syndrome, ...
Ernst, Austrian gynecologist, 1864–1920. See W. operation.
J., 20th century German physician. See W. disease.
Charles, English physician, 1816–1898. See W. syndrome.
John B., Australian-U.S. pulmonary physiologist, *1928.
West Nile fever
A febrile disease caused by the West Nile virus that is transmitted from birds to the common Culex mosquito and then to people. The virus is named after the area it was first ...
Infantile spasms, a seizure disorder of infancy and early childhood with the onset predominantly in the first year of life of myoclonic seizures, hypsarrhythmia (abnormal, ...
Friedrich, 19th century German physician. See W. space.
Alf, Swedish physician, *1891. See W. method.
A technique in molecular biology, used to separate and identify proteins. Called a Western blot merely because it has some similarity to a Southern blot (which is named after ...
Karl F.O., German neurologist, 1833–1890. See W. pupillary reflex, W.- Piltz phenomenon, Edinger-W. nucleus.
Norman C., U.S. pediatrician, *1897. See W. grid.
Ernest Glen, U.S. psychologist, *1902. See W.- Bray phenomenon.
Helmut, 20th century German pediatrician. See W.- Thier syndrome.
Abbreviation for "white female" used by doctors as shorthand when jotting down the results of their physical examination. For example, a WDWNWF = well developed, well nourished ...
Thomas, English anatomist and physician, 1614–1673. See W. duct, W. jelly.
A raised, itchy (pruritic) area of skin that is almost always an overt sign of allergy. Not all wheals are alike. They may be redder or paler than the skin around them. They may ...
wheat germ oil
An oil obtained by expression from the germ of the wheat seed, Triticum aestivum (family Gramineae); one of the richest sources of natural vitamin E; used as a nutritional ...
Charles, English physicist, 1802–1875. See W. bridge.
A circular frame or disk designed to revolve around an axis.
- Burlew w. SYN: Burlew disk.
Henry Lord, U.S. chemist, 1867–1914. See W.- Johnson test.
John M., U.S. ophthalmologist, 1879–1938. See W. method.
1. To breathe with difficulty and noisily. 2. A whistling, squeaking, musical, or puffing sound made on exhalation by air passing through the fauces, glottis, or narrowed ...
A monohydrate of calcium oxalate; found in renal calculi. Cf.:weddellite. [William Whewell, Eng. philosopher (1794–1866), + -ite]
The watery part of milk remaining after the separation of the casein. SYN: serum lactis. [A.S. hwaeg]
- alum w. w. produced by curdling milk by means of powdered alum.
- w. ...
Hyperextension (over-extension) injury to the neck, often the result of being struck from behind, as by a fast-moving vehicle in a car accident. The mechanics of whiplash ...
Allen O., U.S. surgeon, 1881–1963. See W. operation.
George H., U.S. pathologist and Nobel laureate, 1878–1976. See W. disease.
A form of intestinal malabsorption (an inability to absorb nutrients from the intestine) described in 1907 by the pathologist and Nobel laureate George H. Whipple in a medical ...
A type of surgery used to treat pancreatic cancer. The head of the pancreas, the duodenum, a portion of the stomach, and other nearby tissues are removed. The Whipple procedure ...
A nematode (roundworm) also called Trichuris trichiura. The third most common round worm of humans. The worm is found worldwide, with infections more frequent in areas with ...
An alcoholic liquid obtained by the distillation of the fermented mash of wholly or partly malted cereal grains, containing 47 to 53% by volume of C2H5OH, at 15.56°C; it must ...
To speak without phonation, as with an open posterior part of the glottis. [A.S. hwisprian]
1. A sound made by forcing air through a narrow opening. 2. An instrument for producing a w.. [A.S. hwistle]
- Galton w. a cylindrical w., attached to a compressible bulb, with ...
Robert, Br. surgeon, *1939. See W. test.
Paul Dudley, U.S. cardiologist, 1886–1973. See Lee-W. method, Wolff-Parkinson-W. syndrome.
The color resulting from commingling of all the rays of the spectrum; the color of chalk or of snow. SYN: albicans (1). [A.S. hwit]
- w. of eye the visible portion of the ...
White cell differential, automated
A machine-generated percentage of the different types of white blood cells, usually split into granulocytes, lymphocytes, monocytes, eosinophils, and basophils.
White coat hypertension
A transient increase in blood pressure (hypertension) triggered by the sight of medical personnel in white coats (or other attire).
The part of the brain that contains myelinated nerve fibers. The white matter is white because it is the color of myelin, the insulation covering the nerve fibers. The white ...
White spots on the 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 the ...
White subungual onychomycosis, proximal
The rarest form of fungus infection of the finger or toenail. (Fungus infection of the finger or toenail is also called onychomycosis.) The infection begins in the nail fold ...
A familiar term for what is medically called a closed comedo. A comedo, the primary sign of acne, consists of a dilated (widened) hair follicle filled with keratin squamae ...
Colloquialism for leukorrhea or blennorrhea.
Chalk (CaCO3) used for polishing metals or plastic appliances.
SYN: tribasic calcium phosphate. [ Herbert P. Whitlock, Am. mineralogist (*1868), + -ite]
Purulent infection through a perionychial fold causing an abscess of the bulbous distal end of a finger. SYN: felon. [M.E. whitflawe]
- herpetic w. painful herpes simplex virus ...
Royal, U.S. surgeon, 1857–1946. See W. frame.
Alfred, English surgeon, 1876–1946. See W. disease.
An infectious illness, also called melioidosis, that is most frequent in Southeast Asia and Northern Australia and is caused by a bacteria called " Pseudomonas pseudomallei" ...
Samuel E., English anatomist, 1876–1952. See W. tubercle.
Abbreviation for the World Health Organization (in French, OMS = Organisation Mondiale de la Sante), a specialized agency of the United Nations established in 1948 to further ...
A type of chromosome rearrangement, also called a Robertsonian translocation, in which there is fusion of an entire long arm of one acrocentric chromosome with a similarly ...
The loud sonorous inspiration in pertussis with which the paroxysm of coughing terminates, due to spasm of the larynx (glottis).
- systolic w. SYN: systolic honk.
Also known as pertussis, this is a feared infectious disease that can strike the respiratory system and affect other organs of the body. It has three stagesan initial stage ...
1. A turn of the spiral cochlea of the ear. 2. SYN: vortex of heart. 3. A turn of a concha nasalis. 4. SYN: verticil. 5. An area of hair growing in a radial manner ...
Marked by or arranged in whorls. SEE ALSO: vorticose, turbinate, convoluted, verticillate.
Louis-Frédéric, French dermatologist, 1860–1913. See W. striae, under stria.
Georges F.I., French physician, 1862–1929. See W. reaction, W. syndrome, Gruber-W. reaction, Hayem-W. syndrome.
A broad array of sound frequencies as opposed to a narrow array of frequencies.
A sharp point of hair growth in the midline of the anterior scalp margin, usually resulting from recession of hair of the temple areas, or occurring as a congenital ...
Wideness; the distance from one side of an object or area to the other.
- orbital w. the distance between the dacryon and the farthest point on the anterior edge of the outer ...
Hans Rudolf, German pediatrician, *1915. See Beckwith-W. syndrome.
H. See tract of Münzer and W..
Justus Heinrich, German obstetrician and gynecologist, 1769–1817. See W. maneuver.
Sir William R.W., Irish oculist and otologist, 1815–1876. See W. cords, under cord, W. triangle.
Helenor C., 20th century U.S. scientist. See W. stain for reticulum.
Joseph F., U.S. neuropsychiatrist, 1895–1976.
William H., U.S. ophthalmologst, 1860–1935. See W. sign.
Hermann A., German psychiatrist, 1852–1907. See W. ear.
L.S., 20th century Dutch geneticist. See W. syndrome.
Ludwig F., German scientist, 1812–1864. See W. balance.
David P.D., Scottish surgeon, 1882–1938. See W. artery, W. disease.
Daryl Sheldon, 20th century English dermatologist. See Sneddon-W. disease.
A living will is one form of advance medical directive. Advance medical directives pertain to treatment preferences and the designation of a surrogate decision-maker in the ...
J. Abernethy, English obstetrician, †1932. See W. forceps.
Heinrich, 20th century Swiss pediatrician. See Prader-W. syndrome.
Anna W., U.S. bacteriologist, 1863–1955. See W. stain, Park-W. fixative.
J.C.P., 20th century New Zealand cardiologist. See W. syndrome.
Carl S., U.S. surgeon, 1896–1952. See Mann-W. operation, Mann-W. ulcer.
Thomas, English physician, 1621–1675. See W. centrum nervosum, W. cords, under cord, W. pancreas, W. paracusis, W. pouch, circle of W., accessorius willisii, chordae willisii, ...
Willis, circle of
The circle of Willis is an arterial circle of critical importance at the base of the brain. It is called an arterial anastomosis, a joining of arteries. The circle of Willis ...
Samuel Wendell, U.S. paleontologist, 1852–1918. See W. law.
A tree of the genus Salix; the bark of several species, especially S. fragilis, is a source of salicin. [A.S. welig]
Max, German surgeon, 1867–1918. See W. tumor.
A malignant tumor of the kidney in young children. It is also known as nephroblastoma. Wilms tumor is the most common kidney cancer in children and one the most important ...
Clifford, English physician, *1906. See Kimmelstiel-W. disease, Kimmelstiel-W. syndrome.
James, English anatomist, physiologist, and surgeon, 1765–1821. See W. muscle.
An inherited disorder in which too much copper accumulates in the body. Although the accumulation of copper begins at birth, symptoms of the disorder appear later in life, ...
Internal injury with no surface lesion, caused by collision with the pressure of compressed air or with an object propelled by compressed air.
Erythema of the face due to exposure to wind.
1. SYN: fenestra. 2. Any opening in space or time. 3. Radiology. A view especially contrived to accentuate tissue contrast.
- aortic w. obsolete term for a radiolucent region ...
The windpipe, or larynx, is the portion of the respiratory (breathing) tract containing the vocal cords which produce vocal sounds. The windpipe, or larynx, is located between the ...
1. The fermented juice of the grape. SYN: vinous liquor. 2. A group of preparations consisting of a solution of one or more medicinal substances in w., usually white w. ...
The anterior appendage of a bird. SYN: ala (1).
- angel w. a deformity in which both scapulae project conspicuously. SEE ALSO: winged scapula.
- ashen w. SYN: vagal (nerve) ...
Popular and familiar term for the scapula, the flat triangular bone at the back of the shoulder. The word "scapula" (with the accent on the first syllable) is a steal straight ...
Felix von, German surgeon, 1852–1931. See W.- Buerger disease.
SYN: blink. [A.S. wincian]
Jacques B., Danish anatomist, physicist, and surgeon in Paris, 1669–1760. See foramen of W., W. ligament, W. pancreas, W. stars, under star, stellulae winslowii, under ...
Thomas Masterman, English physician, 1765–1859. See W. sign.
Wilhelm, Austrian physician, 1835–1917. See W. sound.
Hugo, Austrian ophthalmologist, 1865–1918. See W. rosettes, under rosette.
Slender and pliable rod or thread of metal.
- arch w. SYN: archwire.
- guide w. See guidewire.
- Kirschner w. an apparatus for skeletal traction in long bone fracture or for ...
Fastening together the ends of a broken bone by wire sutures.
- circumferential w. fixation of mandibular fractures by passing wires around a section of bone and intraoral ...
Johann G., German anatomist in Padua, 1589–1643. See W. canal, W. duct.
Resembling or having the feel of a wire; filiform and hard; denoting a variety of pulse.
Arthur, 20th century German pediatrician. See W.- Aldrich syndrome.
Hans, Swiss pediatrician, *1906. See W. syndrome.
Caspar, U.S. biologist, 1761–1818, after whom the W. Institute is named. See W. rats, under rat.
An old folk term for the milk that commonly flows from the newborn baby's breast or can be expressed from it. This transient phenomenon is due to stimulation of the baby's breasts ...
1. The act of removal or retreat. 2. A psychologic and/or physical syndrome caused by the abrupt cessation of the use of a drug in an habituated individual. 3. The therapeutic ...
Abnormal physical or psychological features that follow the abrupt discontinuation of a drug that has the capability of producing physical dependence. Common withdrawal symptoms ...
A method of contraception, also called coitus interruptus, in which the man withdraws his penis from the vagina before ejaculation. Fertilization is prevented because the ...
A favoid condition of the scalp seen in South Africans.
A genetic disorder characterized by the absence of several teeth at birth and abnormalities of the nails. The disorder is also known as hypodontia and nail dysgenesis or, more ...
A morbid tendency to pun, make poor jokes, and tell pointless stories, while being oneself inordinately entertained thereby. [Ger. witzeln, to affect wit, + Sucht, mania]
Abbreviation for "white male" used by doctors as shorthand when jotting down the results of their physical examination. For example, WDWNWM = well developed, well nourished white ...
Within normal limits. A laboratory test result may for instance be WNL.
In molecular biology, unorthodox pairing between the base at the 5′ end of an anticodon and the base that pairs with it (in the 3′ position of the codon); thus, the ...
A genus of larviparous dipterous fleshflies (family Sarcophagidae), of which some species ' larvae breed in ulcerated surfaces and flesh wounds of humans and animals. ...
Infection of animals and humans with larvae of flies of the genus Wohlfahrtia.
Gunnar, Swedish neurologist, 1910–1961. See W.-Kugelberg- Welander disease.
A., 20th century U.S. pathologist. See W.- Orton bodies, under body.
Wolf-Hirschhorn syndrome (WHS)
Wolf-Hirschhorn syndrome (WHS) is a chromosome disorder due to partial deletion of the short (p) arm of chromosome 4. It is therefore also called the 4p- syndrome. Features of ...
John R., Scottish ophthalmologist, 1824–1904. See W. graft, W.- Krause graft.
Julius, German anatomist, 1836–1902. See W. law.
Kaspar F., German embryologist in Russia, 1733–1794. See wolffian body, wolffian cyst, wolffian duct, wolffian rest, ...
A condition caused by an abnormality in the electrical system of the heart which normally tells the heart muscle when to contract. In Wolff-Parkinson-White (WPW) syndrome, there ...
Relating to or described by Kaspar Wolff.
Anton, Bohemian surgeon, 1850–1917. See W. gland.
A genetic neurodegenerative disease that leads to many different abnormalities including diabetes insipidus (inability to concentrate the urine), diabetes mellitus (the usual type ...
Emilj F. von, Polish ophthalmologist, 1832–1906. See W. glands, under gland.
Also known as trench fever, a disease borne by body lice that was first recognized in the trenches of World War I, when it is estimated to have affected more than a million ...
Genus of Gram-negative, microaerophilic bacteria with helical to curved cells; exhibits motility by a single polar flagellum. Isolated from the gingival sulcus and from root ...
William H., English physician and physicist, 1766–1828. See W. doublet, W. theory.
Moshe, 20th century Israeli neuropathologist, *1914. See W. disease, W. xanthomatosis.
The womb (uterus) is a hollow, pear-shaped organ located in a woman's lower abdomen between the bladder and the rectum. The narrow, lower portion of the uterus is the cervix; the ...
A hospital for the exclusive use of women. The first hospital called by that name was the Woman's Hospital of New York City. It opened in 1855. The hospital was founded by the ...
Paul. See W. units, under unit.
Robert, U.S. physicist, 1868–1955. See W. glass, W. lamp, W. light.
A specially prepared, not compressed, wood fiber used for surgical dressings.
The hair of the sheep; sometimes, when defatted, used as a surgical dressing. SYN: lana.
- w. alcohols w. wax alcohols prepared by saponification of the grease of sheep w. and ...
B., 20th-century British biochemist. See W.-Lineweaver- Burk plot.
Thomas, English sculptor, 1826–1892. See W. tip.
A jumble of meaningless and unrelated words emitted by persons with certain kinds of schizophrenia.
A form of focal dystonia caused by wordprocessing that affects the muscles of the hand and, sometimes, the forearm. The term " dystonia" refers to a state of abnormal (too much ...
M.M.F., 20th century French dermatologist. See W.- Kolopp disease.
1. Physical and/or mental effort to achieve a result. 2. That which is accomplished when a force acts against resistance to produce motion.
A person who manifests a compulsive need to work, even at the expense of family responsibilities, social life, and health. [by analogy with alcoholic] Although increasingly ...
Working Formulation for Clinical Usage
Classification of malignant lymphomas introduced by the National Cancer Institute in 1982, based on the correlation of clinical and histopathologic features of various lymphomas; ...
Short-term (recent) memory. Working memory is a system for temporarily storing and managing the information required to carry out complex cognitive tasks such as learning, ...
In psychoanalysis, the state in the treatment process in which the patient's personal history and psychodynamics are uncovered.
In psychoanalysis, the process of obtaining additional insight and personality changes in a patient through repeated and varied examination of a conflict or problem; the ...
A computer or television monitor with controls for studying and manipulating graphical or clinical images.
World Health Organization
WHO or, in French, OMS (Organisation Mondiale de la Sante), a specialized agency of the United Nations established in 1948 to further international cooperation for improved health ...
Ole, Danish anatomist, 1588–1654. See wormian bones, under bone.
1. In anatomy, any structure resembling a w., e.g., the midline part of the cerebellum in the forms of “vermis” and “lumbrical.” 2. Term once used to designate any member ...
Ole, Danish anatomist, 1588–1654. See wormian bones, under bone.
1. In anatomy, any structure resembling a w., e.g., the midline part of the cerebellum in the forms of “vermis” and “lumbrical.” 2. Term once used to designate any member ...
Relating to or described by Ole Worm.
Theodore G., U.S. chemist, 1826–1897. See W. test.
1. Santonica. 2. SYN: chenopodium.
The essence of absinthe, an emerald-green liqueur flavored with extracts of the wormwood plant, licorice and aromatic flavorings in a alcohol base. Absinthe was ...
1. A suffix in the popular names of many plants, such as liverwort, lungwort, woundwort, etc. 2. An infusion of malt. [A.S. wyrt, a plant]
- St. John's w. a shrubby perennial ...
Claud A., British ophthalmologist, 1869–1936. See W. amblyoscope.
Peter, English chemist, 1727–1803. See W. bottle.
1. Trauma to any of the tissues of the body, especially that caused by physical means and with interruption of continuity. 2. A surgical incision. [O.E. wund]
- abraded w. SYN: ...
Abbreviation for the Wolff-Parkinson-White syndrome, a condition caused by an abnormality in the electrical system of the heart which normally tells the heart muscle when to ...
Abbreviation for Wright antigens, under antigen. See low frequency blood group s, Blood Groups appendix.
A cover, particularly one that enfolds or encloses.
- cardiac muscle w. SYN: cardiomyoplasty.
A structure resembling a twisted or entwined band or a garland. [A.S. wraeth, a bandage]
- ciliary w. SYN: corona ciliaris.
Basil Martin, 20th century British physician. See W. respirometer.
James Homer, U.S. pathologist, 1869–1928. See W. stain.
Marmaduke Burr, U.S. obstetrician, 1803–1879. See ...
A furrow, fold, or crease in the skin, particularly with increasing occurrence as a result of sun exposure or, in perioral skin, cigarette smoking; associated with degeneration ...
Heinrich A., German anatomist and gynecologist, 1739–1808. See W. cartilage, W. ganglia, under ganglion, W. ligament, W. nerve, W. tubercle.
The proximal segment (the near part) of the hand consisting of the carpal bones and the associated soft parts. The eight carpal bones are arranged in two rows and articulate (come ...
A dystonia that affects the muscles of the hand and sometimes the forearm and only occurs during handwriting. Similar focal dystonias have also been called typists cramp, ...
Medically called spasmodic torticollis, or torticollis. The most common of the focal dystonias. In torticollis, the muscles in the neck that control the position of the head ...
A genus of filarial nematodes (family Onchocercidae, superfamily Filarioidea) characterized by adult forms that live chiefly in lymphatic vessels and produce large numbers of ...
Infection with worms of the genus Wuchereria. SEE ALSO: filariasis.
Casimir, German chemist, 1856–1913. See W. reagent, W. test.
Roger, British physician. See Wyburn- Mason syndrome.
Jeffries, U.S. biochemist, 1901–1995. See Monod-W.-Changeux model.
Symbol for Kienböck unit; xanthosine; halogen atom; unspecified amino acid.
Symbol for reactance.
X (drug caution code)
Abbreviation on a medication that indicates SOS — that the medication contains a substance such as acetaminophen that could cause problems — consult your pharmacist. While ...
X (in genetics)
Although the letter X can be used as a symbol in various ways (such as with X-rays, the X-axis of a graph, etc.), "the X " in genetics and medicine today usually refers ...
A coagulation factor, a substance in blood essential to the normal clotting process. Production of factor X takes place in the liver and requires vitamin K. The gene for factor ...
On the X chromosome. "Linked" in genetics does not mean merely associated. An X-linked gene travels with the X chromosome and therefore is part of the X chromosome.
* * ...
A trade name (of Kodak) that has become the generic designation of an automatic processor for x-ray films.
Radiant energy from an x-ray tube. SEE ALSO: x-ray.
1. The ionizing electromagnetic radiation emitted from a highly evacuated tube, resulting from the excitation of the inner orbital electrons by the bombardment of the target ...
The use of X-rays of known wavelength to learn the structure of any crystalline material. Put otherwise, X-ray crystallography is a technology by which the locations of atoms ...
An X-ray picture in which the beams pass from front-to-back (anteroposterior). An AP film is as opposed to a PA (posteroanterior) film in which the rays pass through the body from ...
An X-ray picture in which the beams pass from back-to-front (posteroanterior). By contrast an AP (anteroposterior) film is one in which the rays pass through the body from ...
Symbol for unspecified amino acid.
Abbreviation for xanthine.
A colorful prefix relating to a yellow color. " Xanth-" is related to the word " xanthic" which has its roots in the Greek word "xanthos" which means yellow. A number of medical ...
Tiny (1-2 mm) yellowish plaques that are slightly raised on the skin surface of the upper or lower eyelids. Xanthelasma is caused by tiny deposits of fat in the skin and is often ...
A yellow substance derived from hematin by treating with nitric acid.
SYN: carotenemia. [ xanth- + G. haima, blood]
1. The basic structure of many natural products, drugs, dyes ( e.g., fluorescein, pyronin, eosins), indicators, pesticides, antibiotics, etc. 2. A class of molecules based upon ...
1. Yellow or yellowish in color. 2. Relating to xanthine.
A substance found in caffeine, theobromine, and theophylline and encountered in tea, coffee, and the colas. Chemically, xanthine is a purine. There is a genetic disease of ...
An inherited metabolic disorder in which there is deficiency of an enzyme needed to process xanthine, a substance found in caffeine, theobromine, theophylline, and related ...
A pigmentary anomaly of blacks, characterized by red or yellow-red hair color, copper-red skin, and often by dilution of iris pigment; autosomal recessive inheritance caused by ...
SYN: pleomorphic x.. [xantho + astrocytoma]
- pleomorphic x. a rare variant of astrocytoma usually presenting early in life with seizures. The tumor is superficially located ...
The occurrence of patches of yellow color in the skin, resembling xanthoma, but without the nodules or plates. SYN: xanthoderma (1), yellow disease, yellow skin (1). [xantho- + ...
1. SYN: xanthochromia. 2. Any yellow coloration of the skin. SYN: yellow skin (2). [xantho- + G. derma, skin]
One who has yellow teeth. [xantho- + G. odous, tooth]
A peculiar infiltration of retroperitoneal tissue by lipid macrophages, occurring most commonly in women.
- juvenile x. single or multiple reddish to yellow papules or nodules, ...
Yellowish firm nodules in the skin frequently indicating underlying disease, such as diabetes, disorder of fats (lipid disorder or hyperlipidemia), or other conditions. A ...
Xanthoma that clusters around tendons, and is associated with lipid disorders.
Xanthoma that clusters near joints. It is associated with lipid disorders, cirrhosis of the liver, and thyroid disorders.
Xanthoma associated with poorly controlled diabetes mellitus. Treating the diabetes can cause the xanthomas to disappear.
A type of xanthoma characterized by orange-to-brown nodules on the skin or mucus membranes.
Xanthoma linked to lipid disorders, and accompanied by a pink-to-red raised rash.
A type of xanthoma characterized by flat yellow-to-orange patches or pimples that cluster together on the skin.
A condition in which fatty deposits occur in various parts of the body. These fatty deposits are called xanthomas or xanthomata and appear as yellowish firm nodules in the skin. ...
Genus of the family Pseudomonadaceae; aerobic, Gram-negative, chemoorganotrophic, straight bacilli that exhibit motility by flagella. Type species is X. campestris.
- X. ...
Oxygenated derivative of carotene; a yellow plant pigment, occurring also in egg yolk and corpus luteum. SYN: lutein (2), luteol, luteole.
A noncrystallizable yellow substance derived from proteins upon treatment with nitric acid.
The yellow product formed upon treating protein with hot nitric acid, probably from nitration of phenyl groups.
A form of chromatopsia, a visual defect in which objects appear as if they have been overpainted with an unnatural color. In xanthopsia, that color is yellow.
* * *
A condition ...
9-β-d-Ribosylxanthine; the deamination product of guanosine (O replacing –NH2). SYN: xanthine ribonucleoside.
- x. 5′-monophosphate (XMP) the monophosphoric ester of x.; an ...
Yellowing of the skin without yellowing of the eyes. In jaundice there is yellowing of both the skin and the whites of the eyes. Xanthosis is associated sometimes with ...
Yellowish; yellow-colored. [G. xanthos, yellow]
The sulfur-yellow crystals form a red compound with Millon reagent, or an intensely green one with ferrous sulfate; excreted in the urine of pyridoxine-deficient animals after ...
A radical consisting of xanthine minus a hydrogen atom.