- sedation (n.)
[sedation 词源字典]
- early 15c., "alleviation of pain;" 1540s, "act of making calm," from Middle French sédation and directly from Latin sedationem (nominative sedatio) "a quieting, assuaging, a calming," noun of action from past participle stem of sedare (see sedate (adj.)).[sedation etymology, sedation origin, 英语词源]