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urbi et orbi
URC
urceolate
urchin
Urdu
-ure
urea
urea-formaldehyde resin
urease
urediniospore
uredinium
uredo
uredosorus
uredospore
ureide
uremia
ureotelic
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urease
u·re·ase [ yree àyss, yree àyz ] or u·rase [ yr àyss, yr àyz ]


noun 
Definition:
 
enzyme: an enzyme in some bacteria and seeds that breaks down urea to produce carbon dioxide and ammonia
[Late 19th century. <urea + -ase]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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