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  1. involucre

    • IPA[ˈɪnvəl(j)uːkə]

    英式

    • n.
      a membranous envelope.;a whorl or rosette of bracts surrounding an inflorescence (especially a capitulum) or at the base of an umbel.
    • noun: involucre, plural noun: involucres

    • 更多解釋
    • IPA[ˈinvəˌlo͞okər]

    美式

    • n.
      a whorl or rosette of bracts surrounding an inflorescence (especially a capitulum) or at the ...

    Oxford American Dictionary