| Thornwaldt | Gustavus Ludwig. See: Tornwaldt. (05 Mar 2000) |
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| thorny | 1. Full of thorns or spines; rough with thorns; spiny; as, a thorny wood; a thorny tree; a thorny crown. 2. Like a thorn or thorns; hence, figuratively, troublesome; vexatious; harassing; perplexing. "The thorny point of bare distress." "The steep and thorny way to heaven. <botany>" (Shak) Thorny rest-harrow, rest-harrow. Thorny trefoil, a prickly plant of the genus Fagonia (F. Cretica, etc). Origin: Cf. AS. Thorniht. Source: Websters Dictionary (01 Mar 1998) |
| thorotrast | <radiology> Previously used contrast agent, accumulated in RE system, liver, spleen, lymph nodes, thorium emits alpha particles, associated with: hepatobiliary carcinoma, leukaemia, aplastic anaemia, dense liver and spleen, bone within a bone (12 Dec 1998) |
| thorough-pin | <veterinary> A disease of the hock (sometimes of the knee) of a horse, caused by inflammation of the synovial membrane and a consequent excessive secretion of the synovial fluid. This is probably so called because there is synovial distention of the sheath of the flexor perforans tendon producing an oval swelling on each side of the leg, appearing somewhat as if a pin had been thrust through. Source: Websters Dictionary (21 Jun 2000) |
| thoroughbred | Bred from the best blood through a long line; pure-blooded; said of stock, as horses. Hence, having the characteristics of such breeding; mettlesome; courageous; of elegant form, or the like. A thoroughbred animal, especially a horse. Source: Websters Dictionary (01 Mar 1998) |
| thoroughwax | <botany> An umbelliferous plant (Bupleurum rotundifolium) with perfoliate leaves. Thoroughwort. Source: Websters Dictionary (01 Mar 1998) |