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diorite

play
noun di·o·rite \ˈdī-ə-ˌrīt\

Definition of diorite

  1. :  a granular crystalline igneous rock commonly of acid plagioclase and hornblende, pyroxene, or biotite

dioritic play \ˌdī-ə-ˈri-tik\ adjective


Origin of diorite

French, irregular from Greek diorizein to distinguish, from dia- + horizein to define — more at horizon


First Known Use: 1826


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