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  1. Oxford American Dictionary

    functional group

    • IPA[ˈfəNG(k)SHənl]
    • n.
      a group of atoms responsible for the characteristic reactions of a particular compound.

    • noun: functional group, plural noun: functional groups

    • 更多解釋

    functional group

    • n.
      a group of atoms responsible for the characteristic reactions of a particular compound.

    Oxford Dictionary