Sedative



GRE

解释

GRE 红宝书

• adj. ( 药物) 镇静的; n. 镇静剂
• ［英］ adj. ( 药物) 镇静的 ( tending to calm excitement) ; n. 镇静剂 ( a sedative drug)

Webster Collegiate

I. adjective

• Etymology: Middle English, alleviating pain, from Middle French sedatif, from Medieval Latin sedativus, from Latin sedatus
• Date: 1779
• tending to calm, moderate, or tranquilize nervousness or excitement

II. noun

• Date: 1797
• a sedative agent or drug

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