noun \ə-ˈlä-trə-pē\
plural al·lot·ro·pies

Definition of ALLOTROPY

: the existence of a substance and especially an element in two or more different forms (as of crystals) usually in the same phase
al·lo·trop·ic \ˌal-ə-ˈträp-ik\ adjective
al·lo·trop·i·cal·ly \-i-k(ə-)lē\ adverb

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