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  1. Oxford Dictionary

    concavity

    • IPA[kɒnˈkavɪti]

    英式

    • n.
      the state or quality of being concave；a concave surface or thing

    • noun: concavity, plural noun: concavities

    • 釋義

    名詞

    • 1. the state or quality of being concave the concavity of her stomach
    • ▪ a concave surface or thing the spaces are hollowed out to form concavities