| Wachendorf, Eberhard | <person> German botanist and anatomist, 1702-1758. See: Wachendorf's membrane. (05 Mar 2000) |
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| Wachstein, Max | <person> U.S. Histologist and pathologist, 1905-1965. See: Wachstein-Meissel stain for calcium-magnesium-ATPase. (05 Mar 2000) |
| Wachstein-Meissel stain | <technique> For calcium-magnesium-ATPase, a method similar to that of Gomori's non-specific acid phosphatase stain, except that incubation is carried out with ATP as substrate at neutral pH; enzyme activity is generally demonstrated at cell membranes. (05 Mar 2000) |
| Wachter, Herman | <person> German pathologist, *1878. See: Bracht-Wachter lesion. (05 Mar 2000) |
| wacky | <geology> A soft, earthy, dark-coloured rock or clay derived from the alteration of basalt. Origin: G. Wacke, MHG.wacke a large stone, OHG. Waggo a pebble. Source: Websters Dictionary (01 Mar 1998) |
| Wada test | <investigation> Unilateral internal carotid injection of amobarbital to determine the laterality of speech; injection on the dominant side causes transient aphasia or mutism; used prior to surgical treatment of epilepsy. (05 Mar 2000) |
| Wada, J | <person> 20th century Japanese-Canadian neurologist. See: Wada test. (05 Mar 2000) |
| wadd | <chemical> An earthy oxide of manganese, or mixture of different oxides and water, with some oxide of iron, and often silica, alumina, lime, or baryta; black ocher. There are several varieties. Plumbago, or black lead. Source: Websters Dictionary (01 Mar 1998) |
| wadding | Carded cotton or wool in sheets, used for surgical dressings. (05 Mar 2000) |
| Waddington | C. H., British embryologist and geneticist, 1905-1975. See: waddingtonian homeostasis. (05 Mar 2000) |
| waddingtonian homeostasis | The set of processes by which imbalances and other defects in ontogeny are corrected before development is completed. Synonym: ontogenic homeostasis, waddingtonian homeostasis. Origin: homeo-+ G. Rheos, stream, current (05 Mar 2000) |
| waddle | Rolling gait in which the weight-bearing hip is not stabilised; it bulges outward with each step, while the opposite side of the pelvis drops, resulting in alternating lateral trunk movements; due to gluteus medius muscle weakness, and seen with muscular dystrophies, among other disorders. Synonym: waddle. (05 Mar 2000) |
| waddling gait | Rolling gait in which the weight-bearing hip is not stabilised; it bulges outward with each step, while the opposite side of the pelvis drops, resulting in alternating lateral trunk movements; due to gluteus medius muscle weakness, and seen with muscular dystrophies, among other disorders. Synonym: waddle. (05 Mar 2000) |
| wader | 1. One who, or that which, wades. 2. <ornithology> Any long-legged bird that wades in the water in search of food, especially any species of limicoline or grallatorial birds; called also wading bird. Source: Websters Dictionary (01 Mar 1998) |
| wading | From Wade, Wading bird. <zoology> See Wader. Source: Websters Dictionary (01 Mar 1998) |