| ammelide aminohydrolase | <enzyme> Catalyses the conversion of ammelide to cyanuric acid and nh3 Registry number: EC 3.5.4.- (26 Jun 1999) |
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| ammeter | <physics> A contraction of amperometer or amperemeter. Source: Websters Dictionary (01 Mar 1998) |
| ammite | <geology> Oolite or roestone; written also hammite. Origin: Gr, sandstone, fr. Or sand. Source: Websters Dictionary (01 Mar 1998) |
| ammodyte | <zoology> One of a genus of fishes; the sand eel. A kind of viper in southern Europe. Origin: L. Ammodytes, Gr. Sand burrower, a kind of serpent; sand + diver, to dive. Source: Websters Dictionary (01 Mar 1998) |
| Ammon | Greek name of Egyptian god, Amun. See: Ammon's horn. (05 Mar 2000) |
| Ammon's fissure | A pearl-shaped opening in the sclera during early embryogenesis. (05 Mar 2000) |
| Ammon's horn | One of the two interlocking gyri composing the hippocampus, the other being the dentate gyrus. Synonym: cornu ammonis. Origin: G. Ammon, the Egyptian deity Amun (05 Mar 2000) |
| Ammon's prominence | An external prominence in the posterior pole of the eyeball during early embryogenesis. (05 Mar 2000) |
| Ammon, Friedrich von | <person> German ophthalmologist and pathologist, 1799-1861. See: Ammon's fissure, Ammon's prominence. (05 Mar 2000) |
| ammonaemia | The presence of ammonia or some of its compounds in the blood, thought to be formed from the decomposition of urea; it usually results in subnormal temperature, weak pulse, gastroenteric symptoms, and coma. Synonym: hyperammonaemia. Origin: ammonia + G. Haima, blood (05 Mar 2000) |
| ammonia | <biochemistry> The common name for NH3, a strongly basic, irritating, colourlessgas which is lighter than air and readily soluble in water. It is formed in nature as a by-product of protein metabolism in animals.Industrially, it is used in explosives, fertiliser, refrigerants, household cleaningsolutions, etc. Ammonium hydroxide (NH4+), a solution of ammonia gas in water. (09 Oct 1997) |
| ammonia assimilation | The utilization of ammonia (or ammonium ions) in the net synthesis of nitrogen-containing molecules; e.g., glutamine synthetase. Synonym: ammonia fixation. (05 Mar 2000) |
| ammonia detoxication | The detoxication of ammonia and ammonium ion by the formation of ammonium salts, specific nitrogen-excretion products, or l-glutamine. (05 Mar 2000) |
| ammonia fixation | The utilization of ammonia (or ammonium ions) in the net synthesis of nitrogen-containing molecules; e.g., glutamine synthetase. Synonym: ammonia fixation. (05 Mar 2000) |
| ammonia monooxygenase | <enzyme> Ammonia is oxidised to hydroxylamine by nitrifying bacterium, nitrosomonas europaea; also hydroxylates alkanes and arenes; converts alkenes to epoxides Registry number: EC 1.7.3.- Synonym: ammonia mono-oxygenase (26 Jun 1999) |