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单词 ureal
释义

WordReference Random House Unabridged Dictionary of American English © 2024
u•re•a  (yŏŏ rēə, yŏŏrē ə),USA pronunciation n. 
  1. Biochemistrya compound, CO(NH2)2, occurring in urine and other body fluids as a product of protein metabolism.
  2. Chemistrya water-soluble powder form of this compound, obtained by the reaction of liquid ammonia and liquid carbon dioxide: used as a fertilizer, animal feed, in the synthesis of plastics, resins, and barbiturates, and in medicine as a diuretic and in the diagnosis of kidney function. Also called carbamide. 
  • Greek oûron urine or oureîn to urinate; see uro-1
  • French urée; ultimately
  • Neo-Latin
  • 1800–10
u•real, u•reic, adj. 

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更新时间:2024/11/11 13:40:52