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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

wasting palsy
Synonym for amyotrophic lateral sclerosis ... A serious neurologic disease that results from the progressive degeneration of the motor neurons. ... (27 Sep 1997) ...

wasting paralysis
Synonym for amyotrophic lateral sclerosis ... A serious neurologic disease that results from the progressive degeneration of the motor neurons. ... (27 Sep 1997) ...

wasting syndrome
<syndrome> A condition characterised by loss of ten percent of normal weight without obvious cause. The weight loss is largely the result of depletion of the protein in lean body mass and represents a metabolic derangement frequent during AIDS. ... (31 Dec 1997) ...

watch
1. The act of watching; forbearance of sleep; vigil; wakeful, vigilant, or constantly observant attention; close observation; guard; preservative or preventive vigilance; formerly, a watching or guarding by night. 'Shepherds keeping watch by night.' (Milton) 'All the long night their mournful watch they keep.' (Addison) ... Watch was formerly distin …

watchful
Full of watch; vigilant; attentive; careful to observe closely; observant; cautious; with of before the thing to be regulated or guarded; as, to be watchful of one's behavior; and with against before the thing to be avoided; as, to be watchful against the growth of vicious habits. 'Many a watchful night.' . 'Happy watchful shepherds.' . ''Twixt pra …

watchmaker's cramp
An occupational dystonia characterised by spasm of the orbicularis palpebrarum muscle from holding the lens to the eye and spasm of the muscles of the hand from performing the delicate movements of watch repairing. ... (05 Mar 2000) ...

watchman
1. One set to watch; a person who keeps guard; a guard; a sentinel. ... 2. Specifically, one who guards a building, or the streets of a city, by night. ... <zoology> Watchman beetle, the European dor. Watchman's clock, a watchman's detector in which the apparatus for recording the times of visiting several stations is contained within a single …

water
1. To wet or supply with water; to moisten; to overflow with water; to irrigate; as, to water land; to water flowers. 'With tears watering the ground.' (Milton) 'Men whose lives gilded on like rivers that water the woodlands.' (Longfellow) ... 2. To supply with water for drink; to cause or allow to drink; as, to water cattle and horses. ... 3. To wet …

water activity
<chemistry> An expression of the relative availability of water in a substance. Pure water has an water activity of 1.000. The water activity of a solution is one-hundredth its relative humidity. ... (09 Oct 1997) ...

water bath
In chemistry, a vessel containing water, in which a container holding a substance to be heated or evaporated can be immersed. ... (05 Mar 2000) ...

water bed
A mattress in the form of a closed rubber bag filled with water; used to prevent or treat pressure sores by equalizing the distribution of the patient's weight against the support. ... (05 Mar 2000) ...

water buck
<zoology> A large, heavy antelope (Kobus ellipsiprymnus) native of Central Africa. It frequents the banks of rivers and is a good swimmer. It has a white ring around the rump. Called also photomok, water antelope, and waterbok. ... The name is also applied to other related species, as the leche (Kobus leche), which has similar habits. ... Sourc …

water bug
<zoology> The Croton bug. ... Any one of numerous species of large, rapacious, aquatic, hemipterous insects belonging to Belostoma, Benacus, Zaitha, and other genera of the family Belostomatidae. Their hind legs are long and fringed, and act like oars. Some of these insects are of great size, being among the largest existing Hemiptera. Many of …

water deprivation
The withholding of water in a structured experimental situation. ... (12 Dec 1998) ...

water diuresis
Diuresis following the drinking of water; due to reduced secretion of the antidiuretic hormone of the neurohypophysis in response to the lowered osmotic pressure of the blood. ... (05 Mar 2000) ...

water for injection
Water purified by distillation for the preparation of products for parenteral use. ... (05 Mar 2000) ...

water hammer
<physics> ... 1. A vessel partly filled with water, exhausted of air, and hermetically sealed. When reversed or shaken, the water being unimpeded by air, strikes the sides in solid mass with a sound like that of a hammer. ... 2. A concussion, or blow, made by water in striking, as against the sides of a pipe or vessel containing it. ... Source: …

water intoxication
The condition induced by the undue retention of water with sodium depletion. It is marked by lethargy, nausea, vomiting, and mild mental aberrations, and in severe cases by convulsions and coma. ... (12 Dec 1998) ...

water itch
Synonym for cutaneous ancylostomiasis ... Cutaneous larva migrans caused by larvae of hookworms. ... Synonym: ancylostoma dermatitis, ancylostomiasis cutis, coolie itch, dew itch, ground itch, swamp itch, swimmer's itch, toe itch, water itch, water sore. ... (05 Mar 2000) ...

water loss, insensible
Loss of water by diffusion through the skin and by evaporation from the respiratory tract. It is so called because we do not know that we are actually losing water at the time that it is leaving the body. (guyton, textbook of medical physiology, 8th ed, p274) ... (12 Dec 1998) ...

water microbiology
The presence of bacteria, viruses, and fungi in water. This term is not restricted to pathogenic organisms. ... (12 Dec 1998) ...

water mite
<zoology> Any of numerous species of aquatic mites belonging to Hydrachna and allied genera of the family Hydrachnidae, usually having the legs fringed and adapted for swimming. They are often red or red and black in colour, and while young are parasites of fresh water insects and mussels. ... Synonym: water tick, and water spider. ... Source: …

water mould
<microbiology> A common term for a fungus in the division Oomycota. ... (09 Oct 1997) ...

water of adhesion
Water held by molecular attraction in contact with solid surfaces, but not forming an essential part of their constitution. ... (05 Mar 2000) ...

water of constitution
Water held by a unit of structure as an essential part of its constitution, though not an ingredient of its molecules. ... See: water of crystallization. ... (05 Mar 2000) ...

water of crystallization
Water of constitution that unites with certain salts and is essential to their arrangement in crystalline form; e.g., CuSO4-5H2O. ... (05 Mar 2000) ...

water ouzel
<ornithology> Any one of several species of small insessorial birds of the genus Cinclus (or Hydrobates), especially the European water ousel (C. Aquaticus), and the American water ousel (C. Mexicanus). These birds live about the water, and are in the habit of walking on the bottom of streams beneath the water in search of food. ... Source: We …

water pollutants
Substances which pollute the water or bodies of water. Use for water pollutants in general or for which there is no specific heading. ... (12 Dec 1998) ...

water pollutants, chemical
Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water. ... (12 Dec 1998) ...

water pollutants, radioactive
Pollutants, present in water or bodies of water, which exhibit radioactivity. ... (12 Dec 1998) ...

water potential
<plant biology> The chemical potential (i.e. Free energy per mole) of water in plants. Water moves within plants from regions of high water potential to regions of lower water potential, i.e. Down gradient. ... (18 Nov 1997) ...

water purification
Any of several processes in which undesirable impurities in water are removed or neutralised; for example, chlorination, filtration, primary treatment, ion exchange, and distillation. It includes treatment of waste water to provide potable and hygiene water in a controlled or closed environment as well as provision of public drinking water supplies …

water sore
Synonym for cutaneous ancylostomiasis ... Cutaneous larva migrans caused by larvae of hookworms. ... Synonym: ancylostoma dermatitis, ancylostomiasis cutis, coolie itch, dew itch, ground itch, swamp itch, swimmer's itch, toe itch, water itch, water sore. ... (05 Mar 2000) ...

water spider
<zoology> An aquatic European spider (Argyoneta aquatica) which constructs its web beneath the surface of the water on water plants. It lives in a bell-shaped structure of silk, open beneath like a diving bell, and filled with air which the spider carries down in the form of small bubbles attached one at a time to the spinnerets and hind feet …

water supply
Source, means, or process of supplying water (as for a community) usually including reservoirs, tunnels, and pipelines and often the watershed from which the water is ultimately drawn. (webster, 3d ed) ... (12 Dec 1998) ...

water table
<ecology> The zone of saturation at the highest average depth during the wettest season, it is at least six inches thick and persists in the soil for more than a few weeks. ... (09 Oct 1997) ...

water wheel murmur
Synonym for mill wheel murmur ... Churning cardiac murmur produced by air embolism to the heart; also heard in pneumohydropericardium. ... Synonym: water wheel murmur. ... (05 Mar 2000) ...

water-clear cell of parathyroid
A variety of chief cell, so-called because the cytoplasm contains much glycogen that is not preserved or stained in the usual preparation. ... Synonym: wasserhelle cell. ... (05 Mar 2000) ...

water-cooled vibrating grate
A boiler grate made up of a tuyere grate surface mounted on a grid of water tubes interconnected with the boiler circulation system for positive cooling. The structure is supported by flexing plates allowing the grid and grate to move in a vibrating action. Ashes are automatically discharged. ... (05 Dec 1998) ...

water-drinking test
A test of the assessment of open-angle glaucoma, measuring intraocular pressure after drinking a quart of water in five minutes. ... (05 Mar 2000) ...

water-electrolyte balance
The state of the body in relation to the intake and excretion of water and electrolytes, particularly sodium and potassium. It exists in a metabolic balance internally with body fluid compartments, total body water, blood volume, extracellular space, etc., externally through sensible and insensible sweating. The hypothalamus controls water balance. …

water-electrolyte imbalance
Disturbances in the body's water-electrolyte metabolism. ... (12 Dec 1998) ...

water-hammer pulse
<radiology> Corrigan's sign: increased pulse at wrist, aortic insufficiency, widened pulse pressure due to increased stroke volume, diastolic regurgitation ... (12 Dec 1998) ...

water-whistle sound
A bubbling whistle heard on auscultation over a bronchial or pulmonary fistula. ... (05 Mar 2000) ...

waterhouse-friderichsen syndrome
<radiology> Septicaemia (e.g., meningococcaemia), haemorrhagic necrosis of adrenals due to, septic emboli, disseminated intravascular coagulopathy (DIC), most likely to be adrenal haemorrhage and/or calcification ... (12 Dec 1998) ...

Waterhouse, Rupert
<person> British physician, 1873-1958. ... See: Waterhouse-Friderichsen syndrome. ... (05 Mar 2000) ...

watering
<medicine> From Water, Watering call Any one of several species of marine bivalve shells of the genus Aspergillum, or Brechites. The valves are small, and consolidated with the capacious calcareous tube which incases the entire animal. The tube is closed at the anterior end by a convex disk perforated by numerous pores, or tubules, and resemb …

watering-can scrotum
Urinary fistulas in scrotum and perineum, resulting from disease of the perineal urethra. ... (05 Mar 2000) ...

watermark
<botany> A line on vegetation or other upright structures that represents the maximum height reached in an inundation (flooding) event. ... (09 Oct 1997) ...

watermaster
An official of the Oregon Water Resources Department who allocates available surface or groundwater in the state. ... (05 Dec 1998) ...

watermelon
<botany> The very large ovoid or roundish fruit of a cucurbitaceous plant (Citrullus vulgaris) of many varieties; also, the plant itself. The fruit sometimes weighs many pounds; its pulp is usually pink in colour, and full of a sweet watery juice. It is a native of tropical Africa, but is now cultivated in many countries. ... Source: Websters …

waterpox
varicella ...

waters
Colloquialism for amniotic fluid. ... Bag of waters, bag. ... False waters, a leakage of fluid prior to or in beginning labour, before the rupture of the amnion. ... (05 Mar 2000) ...

Waters, Charles Alexander
<person> U.S. Radiologist, 1888-1961. ... See: Waters' view radiograph. ... (05 Mar 2000) ...

Waters, Edward
<person> U.S. Obstetrician and gynecologist, *1898. ... See: Waters' operation. ... (05 Mar 2000) ...

Waters' operation
An extraperitoneal cesarean section with a supravesical approach. ... (05 Mar 2000) ...

Waters' projection
A PA radiographic view of the skull made with the orbitomeatal line at an angle of 37° from the plane of the film, to show the orbits and maxillary sinuses. ... Synonym: occipitomental projection, Waters' view. ... (05 Mar 2000) ...

Waters' view
Synonym for Waters' projection ... A PA radiographic view of the skull made with the orbitomeatal line at an angle of 37° from the plane of the film, to show the orbits and maxillary sinuses. ... Synonym: occipitomental projection, Waters' view. ... (05 Mar 2000) ...

Waters' view radiograph
Synonym for maxillary sinus radiograph ... A radiographic frontal view of the maxillary sinuses, orbits, nasal structures and zygomas; permits direct comparison of the sides. ... Synonym: Waters' view radiograph. ... (05 Mar 2000) ...

watershed
1. The whole region or extent of country which contributes to the supply of a river or lake. ... 2. The line of division between two adjacent rivers or lakes with respect to the flow of water by natural channels into them; the natural boundary of a basin. ... Origin: Cf. G. Wasserscheide; wasser water + scheide a place where two things separate, fr. …

watershed infarction
Cortical infarction in an area where the distribution of major cerebral arteries meet or overlap. ... (05 Mar 2000) ...

Waterston operation
A surgically created anastomosis between the pulmonary artery and the ascending aorta to palliate adult tetralogy of Fallot. ... (05 Mar 2000) ...

Waterston shunt
Creation of a narrow (about 3 mm) opening between the ascending aorta and the subjacent right pulmonary artery to increase pulmonary circulation in cyanotic heart disease with decreased pulmonary flow. ... (05 Mar 2000) ...

Waterston, David
<person> British thoracic and paediatric surgeon, *1910. ... See: Waterston operation, Waterston shunt. ... (05 Mar 2000) ...

waterwheel sound
Sound made by cardiac motion inducing splashes in the presence of fluid and air within the pericardial sac. ... (05 Mar 2000) ...

Watson-Crick helix
The helical structure assumed by two strands of deoxyribonucleic acid, held together throughout their length by hydrogen bonds between bases on opposite strands, referred to as Watson-Crick base pairing. ... See: base pair. ... Synonym: DNA helix, double helix, twin helix. ... (05 Mar 2000) ...

Watson-Schwartz test
A qualitative screening test for diagnosis of acute intermittent porphyria by the addition of Ehrlich's reagent and saturated sodium acetate to the urine; a pink or red colour indicates the presence of porphobilinogen or urobilinogen; the former indicates porphyria, the latter does not; therefore, positive results require further differential extra …

Watson, C
<person> U.S. Physician, born 1901. ... Professor and Chairman of Medicine at the University of Minnesota from 1942 to 1966. He made major contributions in the study of liver disease and porphyria. ... See: Watson-Schwartz test. ... (05 Mar 2000) ...

Watson, James
<person> U.S. Geneticist and Nobel laureate, *1928. ... See: Watson-Crick helix. ... (05 Mar 2000) ...

Watson, James Dewey
<person> An American biochemist and alumnus of Indiana University born in 1928 who was one of three people to win the Nobel Prize in 1962 for the category of physiology or medicine. ... He and Francis Crick, an English biologist, discovered the double-stranded helix structure of the DNA molecule and built the Watson-Crick model of this structu …

Watsonius watsoni
An amphistome intestinal fluke of primates in West Africa and Singapore. ... (05 Mar 2000) ...

wattle
1. A twig or flexible rod; hence, a hurdle made of such rods. 'And there he built with wattles from the marsh A little lonely church in days of yore.' (Tennyson) ... 2. A rod laid on a roof to support the thatch. ... 3. <zoology> A naked fleshy, and usually wrinkled and highly coloured, process of the skin hanging from the chin or throat of a b …

wattlebird
1. <ornithology> Any one of several species of honey eaters belonging to Anthochaera and allied genera of the family Meliphagidae. These birds usually have a large and conspicuous wattle of naked skin hanging down below each ear. They are natives of Australia and adjacent islands. ... The best-known species (Anthochaera carunculata) has the up …

wave
1. An advancing ridge or swell on the surface of a liquid, as of the sea, resulting from the oscillatory motion of the particles composing it when disturbed by any force their position of rest; an undulation. 'The wave behind impels the wave before.' (Pope) ... 2. <physics> A vibration propagated from particle to particle through a body or ela …

wave analyzer
An apparatus that assesses a complex mixture of wave forms by separating out their component frequencies and displaying their distribution. ... (05 Mar 2000) ...

wave form
The form of a pulse; e.g., an arterial pressure or displacement wave; or of the pacemaker pulse as demonstrated on the oscilloscope under a specified load. ... Synonym: waveshape. ... (05 Mar 2000) ...

wave number
<microscopy> The number of waves or cycles of light flux or radiant energy, measured through a distance of 1 cm. ... (05 Aug 1998) ...

waveform monitor
<microscopy> A cathode-ray oscilloscope that can conveniently display the video signal. ... See: video waveform. ... (05 Aug 1998) ...

wavefront
<microscopy> A surface at which all vibratory motion is of like phase concurrently. ... (05 Aug 1998) ...

wavelength
<radiobiology> The length of a single cycle of a wave, usually measured from crest-to-crest. For electromagnetic waves, the wavelength determines the type (radio, infrared, visible, ultraviolet, X-Ray, gamma-ray) of radiation, in the case of visible light, wavelength determines the colour of the light. ... (09 Oct 1997) ...

waver
1. To play or move to and fro; to move one way and the other; hence, to totter; to reel; to swing; to flutter. 'With banners and pennons wavering with the wind.' (Ld. Berners) 'Thou wouldst waver on one of these trees as a terror to all evil speakers against dignities.' (Sir W. Scott) ... 2. To be unsettled in opinion; to vacillate; to be undetermin …

waveshape
Synonym for wave form ... The form of a pulse; e.g., an arterial pressure or displacement wave; or of the pacemaker pulse as demonstrated on the oscilloscope under a specified load. ... Synonym: waveshape. ... (05 Mar 2000) ...

wax
<dentistry> A clear wax used to prevent your braces from irritating your lips when your braces are first put on, or at other times. ... (08 Jan 1998) ...

wax acid
A long-chain monocarboxylic acid with an even number of carbons, often found esterified in waxes (e.g., lauric acid). ... (05 Mar 2000) ...

wax alcohol
Synonym for fatty alcohol ... A long chain alcohol, analogous to the fatty acids, of which the fatty alcohol may be viewed as a reduction product; e.g., octadecanol from stearic acid. It is often found esterified in waxes. ... Synonym: wax alcohol. ... (05 Mar 2000) ...

wax bite
<dentistry> A procedure to measure how well your teeth come together. You bite a sheet of wax and leave bitemark in the wax. The orthodontist looks at the bitemarks to see how well your teeth are aligned. ... (08 Jan 1998) ...

wax expansion
In dentistry, a method of expanding wax patterns to compensate for the shrinkage of gold during the casting process. ... (05 Mar 2000) ...

wax form
Synonym for wax pattern ... A pattern of wax that, when invested and burned out or otherwise eliminated, will produce a mold in which a casting may be made. ... Synonym: wax form. ... (05 Mar 2000) ...

wax model denture
Synonym for trial denture ... A setup of artificial teeth so fabricated that it may be placed in the patient's mouth to verify esthetics, for the making of records, or for any other operation deemed necessary before final completion of the denture. ... Synonym: wax model denture. ... (05 Mar 2000) ...

wax pattern
A pattern of wax that, when invested and burned out or otherwise eliminated, will produce a mold in which a casting may be made. ... Synonym: wax form. ... (05 Mar 2000) ...

wax-tipped bougie
A long slender flexible bougie with a wax tip, used for endoscopic passage into the ureter to confirm the presence of a calculus by scratching the surface of the tip with the sharp edges of the stone. ... (05 Mar 2000) ...

waxes
A plastic substance deposited by insects or obtained from plants. Waxes are esters of various fatty acids with higher, usually monohydric alcohols. The wax of pharmacy is principally yellow wax (beeswax), the material of which honeycomb is made. It consists chiefly of cerotic acid and myricin and is used in making ointments, cerates, etc. ... (12 De …

waxing
The contouring of a pattern in wax, generally applied to the shaping in wax of the contours of a trial denture or a crown prior to casting in metal. ... (05 Mar 2000) ...

waxy cast
A form of urinary cast consisting of homogeneous proteinaceous material that has a high refractive index, in contrast to the low refractive index of hyaline cast's; waxy cast's probably represent an advanced stage of the disintegrative process that results in coarsely and finely granular cast's, and are usually indicative of oliguria or anuria. ... …

waxy degeneration
Synonym for amyloid degeneration ... Infiltration of amyloid between cells and fibres of tissues and organs. ... Synonym: waxy degeneration. ... (05 Mar 2000) ...

waxy fingers
Synonym for acroasphyxia ... Impaired digital circulation, possibly a mild form of Raynaud's disease, marked by a purplish or waxy white colour of the fingers, with subnormal local temperature and paresthesia. ... Synonym: dead fingers, waxy fingers. ... Origin: acro-+ G. Asphyxia, stoppage of the pulse ... (05 Mar 2000) ...

waxy kidney
Synonym for amyloid kidney ... A kidney in which amyloidosis has occurred, usually in association with some chronic illness such as multiple myeloma, tuberculosis, osteomyelitis, or other chronic suppurative inflammation; such kidney's are moderately enlarged and grossly manifest a waxy appearance, with amyloid deposited beneath the endothelium in t …

waxy liver
Amyloid degeneration of the liver. ... Synonym: lardaceous liver. ... (05 Mar 2000) ...

way
1. That by, upon, or along, which one passes or processes; opportunity or room to pass; place of passing; passage; road, street, track, or path of any kind; as, they built a way to the mine. 'To find the way to heaven.' 'I shall him seek by way and eke by street.' (Chaucer) 'The way seems difficult, and steep to scale.' (Milton) 'The season and way …

Way, Stanley
<person> British obstetrician-gynecologist. ... See: Stanley Way procedure. ... (05 Mar 2000) ...