| urosteon | Origin: NL, fr. Gr. The tail + a bone. <anatomy, ornithology> A median ossification back of the lophosteon in the sternum of some birds. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| urosternite | <zoology> The sternal, or under piece, of any one of the uromeres of insects and other arthropods. Origin: 2d uro- + sternum. Source: Websters Dictionary (01 Mar 1998) |
| urostyle | <anatomy> A styliform process forming the posterior extremity of the vertebral column in some fishes and amphibians. Origin: 2d uro- + Gr. A pillar. Source: Websters Dictionary (01 Mar 1998) |
| urotensins | Teleost hormones. A family of small peptides isolated from urophyses of bony fishes. They have many different physiological effects, including long-lasting hypotensive activity and have been proposed as antihypertensives. There are at least four different compounds: urotensin I, urotensin II, urotensin III, and urotensin IV. (12 Dec 1998) |
| urothelium | A layer of transitional epithelium in the wall of the bladder, ureter, and renal pelvis, external to the lamina propria. (12 Dec 1998) |
| urothion | A sulfur-containing pteridine derivative isolated from urine. Synonym: uropterin. (05 Mar 2000) |
| urothorax | The presence of urine in the thoracic cavity, usually following complex multiple organ injuries. (05 Mar 2000) |
| urox | <zoology> The aurochs. See: Aurochs, and cf. Urus. Source: Websters Dictionary (01 Mar 1998) |
| uroxanate | <chemistry> A salt of uroxanic acid. Source: Websters Dictionary (01 Mar 1998) |
| uroxanic | <chemistry> Pertaining to, or designating, an acid, C5H8N4O6, which is obtained, as a white crystalline substance, by the slow oxidation of uric acid in alkaline solution. Origin: Uric + alloxan. Source: Websters Dictionary (01 Mar 1998) |
| uroxanthin | <physiology> Same as Indican. Origin: 1st uro- + xanthin. Source: Websters Dictionary (01 Mar 1998) |
| uroxin | <chemistry> A substance produced by acting upon uric with warm and very dilute nitric acid. Source: Websters Dictionary (01 Mar 1998) |