| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024u•re•a (yŏŏ rē′ə, yŏŏr′ē ə),USA pronunciation n. - Biochemistrya compound, CO(NH2)2, occurring in urine and other body fluids as a product of protein metabolism.
- 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
Collins Concise English Dictionary © HarperCollins Publishers:: urea /ˈjʊərɪə/ n - a white water-soluble crystalline compound with a saline taste and often an odour of ammonia, produced by protein metabolism and excreted in urine. A synthetic form is used as a fertilizer, animal feed, and in the manufacture of synthetic resins. Formula: CO(NH2)2
Etymology: 19th Century: from New Latin, from French urée, from Greek ouron urineuˈreal, uˈreic adj |