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单词 sedative
释义

WordReference Random House Learner's Dictionary of American English © 2024
sed•a•tive /ˈsɛdətɪv/USA pronunciation   adj. 
  1. causing a feeling of calm;
    soothing:a sedative drug.

n. [countable]
  1. Drugsa substance that calms or causes sleepiness.

WordReference Random House Unabridged Dictionary of American English © 2024
sed•a•tive  (sed′ə tiv),USA pronunciation adj. 
  1. tending to calm or soothe.
  2. allaying irritability or excitement;
    assuaging pain;
    lowering functional activity.

n. 
  1. Drugsa sedative drug or agent.
  • Medieval Latin sēdātīvus, equivalent. to Latin sēdāt(us) (see sedate) + -īvus -ive
  • Middle French sédatif )
  • late Middle English (adjective, adjectival) (1375–1425

Collins Concise English Dictionary © HarperCollins Publishers::
sedative /ˈsɛdətɪv/ adj
  1. having a soothing or calming effect
  2. of or relating to sedation
 n
  1. a sedative drug or agent
Etymology: 15th Century: from Medieval Latin sēdātīvus, from Latin sēdātus assuaged; see sedate1
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更新时间：2025/7/24 23:46:04