| 单词 | sedative |
|---|---|
| 音标 | ['sedətiv] |
| 解释 | a.(药物)镇静的；n.镇静剂 |
| 红宝书 | 【英】 adj. (药物)镇静的(tendin g to calm excitement);n. 镇静剂(a sedative drug) 【考】 sedative : drowsiness / anesthetic : numbness(镇静剂使人想睡/麻 醉剂使人麻木)sedative : pacify / antiseptic : sterilize(镇静剂可以使人平静 /杀菌剂可以杀菌) |
| 字源 | sedative (adj.) "tending to calm or soothe," early 15c., from Medieval Latin sedativus "calming, allaying," from sedat-, past participle stem of sedare, causative of sedere "to sit" (see sedentary). The noun derivative meaning "a sedative drug" is attested from 1785. Hence, "whatever soothes or allays." |
| 不择手段背单词 | adj. (药物)镇静的; n 镇静剂(有安慰、镇定或起安静效果的) 【类】sedative: drowsiness = anesthetic: numbness镇静剂使人想睡 = 痲醉剂使人麻木sedative: pacify = antiseptic: sterilize镇静剂可以使人平静 = 杀菌剂可以杀菌 |
| 趣味全助记 | 【记】近于settle 使平静，安定 |
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