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  1. Oxford Dictionary

    ammonoid

    • IPA[ˈamənɔɪd]

    英式

    • n.
      an extinct cephalopod mollusc with a flat-coiled spiral shell, found commonly as a fossil in marine deposits from the Devonian to the Cretaceous periods.
    • adj.
      relating to the ammonoids.

    • noun: ammonoid, plural noun: ammonoids

    • 釋義

    名詞

    • 1. an extinct cephalopod mollusc with a flat-coiled spiral shell, found commonly as a fossil in marine deposits from the Devonian to the Cretaceous periods.

    形容詞

    • 1. relating to the ammonoids.
    • 更多解釋

    ammonoid

    • IPA[ˈaməˌnoid]

    美式

    • n.
      an extinct cephalopod mollusk with a flat-coiled spiral shell, found commonly as a fossil in ...
    • adj.
      relating to the ammonoids.

    Oxford American Dictionary