Diorite

//ˈdaɪ.əˌɹaɪt// noun

Definitions

Noun
  1. 1
    A grey intrusive igneous rock composed mostly of plagioclase feldspar, biotite, hornblende and/or pyroxene. countable, uncountable
  2. 2
    a granular crystalline intrusive rock wordnet

Etymology

From French diorite, invented by mineralogist Alexandre Brongniart (1770-1847), derived from Ancient Greek διορίζω (diorízō, “distinguish”), from δι- plus ὁρίζω (horízō, “to limit”).

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