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urban exploration
urban guerrilla
urban legend
urban planning
urban renewal
urban sprawl
urban warrior
Urbana
Urbandale
urbane
urbanise
urbanism
urbanist
urbanite
urbanity
urbanize
urbi et orbi
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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]
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