diorite
di·o·rite
noun \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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