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BNC: 28604 COCA: 25591
alkaloid
noun [C/U] chemistry /ˈælkəˌlɔɪd/
singularalkaloid
pluralalkaloids
  1. a substance found in plants that is used in drugs and poisons. Morphine, nicotine, and strychnine are all alkaloids. 生物碱(植物中的物质,可用来制药或作为毒物)
     Synonyms and related words
    Substances in or from plants: agar, alkaloid, balsam...
alkaloid
adjective American technical /ˈælkəˌlɔɪd/
  1. alkaline 含碱的;碱的;碱性的
     Synonyms and related words
    Describing chemicals and chemical processes: active, aerobic, alkaline...

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