Main Entry: di·o·rite

Pronunciation: \ˈdī-ə-ˌrīt\

Function: noun

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

Date: 1826

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

— di·o·rit·ic \ˌdī-ə-ˈri-tik\ adjective