减毒活疫苗 jiǎndúhuóyìmiáo attenuated live vaccine Origin Definitions Defs Strokes Stroke Words Sentences Sents 减 減 jiǎn verb to reduce to lower or decrease; to cut down or diminish; to lighten毒 dú noun poison poison; toxin; harmful substance活 huó adjective alive alive; living; in a living state疫苗 yìmiáo noun vaccine a biological preparation used to provide immunity against a specific disease