| urease | <enzyme> An enzyme that breaks urea downinto carbon dioxide and ammonia, itstypically used to measure ureaconcentrations. (09 Oct 1997) |
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| urease test | A test for urea based on the conversion of urea into ammonium carbonate by the enzyme urease; a test for the production of urease, used for identification of cryptococci and Heilcobacter pylori. (05 Mar 2000) |
| urecchysis | An obsolete term for extravasation of urine into the tissues. Origin: G. Ouron, urine, + ekchysis, a pouring out (05 Mar 2000) |
| urechitin | <chemistry> A glucoside extracted from the leaves of a certain plant (Urechitis suberecta) as a bitter white crystalline substance. Source: Websters Dictionary (01 Mar 1998) |
| urechitoxin | <chemistry> A poisonous glucoside found accompanying urechitin, and extracted as a bitter white crystalline substance. Origin: Urechitin + toxic + -in. Source: Websters Dictionary (01 Mar 1998) |
| urecholine supersensitivity test | Urodynamic test that tries to elicit an abnormal cystometrogram after subcutaneous injection of a drug, urecholine. Subcutaneous injection of urecholine may increase detrusor pressure response during filling in patients with some types of neuropathic bladder. (05 Mar 2000) |
| uredema | Oedema due to infiltration of urine into the subcutaneous tissues. Origin: G. Ouron, urine, + oidema, swelling (05 Mar 2000) |
| uredo | 1. <botany> One of the stages in the life history of certain rusts (Uredinales), regarded at one time as a distinct genus. It is a summer stage preceding the teleutospore, or winter stage. See Uredinales, in the Supplement. 2. <medicine> Nettle rash. See Urticaria. Origin: L, a blast, blight, a burning itch, fr. Urere to burn, to scorch. Source: Websters Dictionary (01 Mar 1998) |
| uredospore | A type of spore formed by a rustknown as summer spores. InPuccinia graminis the uredospore occurs on wheat. Compare: teliospore. (09 Oct 1997) |
| ureic | Relating to or containing urea. Synonym: ureic. (05 Mar 2000) |
| ureide | <chemistry> Any one of the many complex derivatives of urea; thus, hydantoin, and, in an extended dense, guanidine, caffeine, et, are ureides. Alternative forms: ureid. Source: Websters Dictionary (01 Mar 1998) |
| ureidosuccinic acid | NH2CONHCH(COOH)CH2COOH; N-carbamoylaspartic acid;a precursor of the pyrimidines. Synonym: N-carbamoylaspartic. (05 Mar 2000) |
| urelcosis | Ulceration of any part of the urinary tract. Origin: G. Ouron, urine, + helkosis, ulceration (05 Mar 2000) |
| uremigenic | 1. Of uraemic origin or causation. 2. Causing or resulting in uraemia. (05 Mar 2000) |
| ureohydrolases | <enzyme> Registry number: EC 3.5.3. (12 Dec 1998) |