noun di·o·rite \ˈdī-ə-ˌrīt\

Definition of DIORITE

:  a granular crystalline igneous rock commonly of acid plagioclase and hornblende, pyroxene, or biotite
di·o·rit·ic \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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