镇静剂 zhènjìngjì sedative Definitions Defs Origin Strokes Stroke Words Sentences Sents 镇静 鎮靜 zhènjìng noun to calm down to calm or stabilize (someone's emotions or nerves)剂 劑 jì noun medicinal or chemical preparation (bound form) A substance made by mixing ingredients for a specific medical or chemical effect, such as a lotion, catalyst, or disinfectant; often found in words like 药剂 yàojì