Etymology
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urea (n.)

compound found in the urine of animals, 1806, Latinized from French urée (1803), from Greek ouron "urine" (see urine).

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Definitions of urea

urea (n.)
the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics;
Synonyms: carbamide
From wordnet.princeton.edu