| 单词 | coma |
| 释义 | coma 1. n. (pl. comas) a prolonged deep unconsciousness, caused esp. by severe injury or excessive use of drugs. Etymology: med.L f. Gk koma deep sleep 2. n. (pl. comae) 1. Astron. a cloud of gas and dust surrounding the nucleus of a comet. 2. Bot. a tuft of silky hairs at the end of some seeds. Etymology: L f. Gk kome hair of head |
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