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TOEFL IELTS BNC: 5914 COCA: 16813
secretion
noun [C/U] biology /sɪˈkriːʃ(ə)n/
singularsecretion
pluralsecretions
  1. a liquid that is produced by a living thing, or the process of producing this liquid 分泌物;分泌

    the secretion of hormones 荷尔蒙的分泌

     Synonyms and related words
    Substances from animals: beeswax, blubber, civet...
     Synonyms and related words
    Substances in or from plants: agar, alkaloid, balsam...

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