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Noun:
  1. the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics

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ÓÃ×÷Ãû´Ê (n.)
  1. A kidney also takes urea and mineral salts out of the blood.
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  2. Sweat consists of water with small amounts of urea and salts.
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