diorite

From French diorite (see below).

diorite (countable and uncountable, plural diorites)

1. (petrology) A grey intrusive igneous rock composed mostly of plagioclase feldspar, biotite, hornblende and/or pyroxene.

• dioritic
• granodiorite
• microdiorite

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

diorite f (uncountable)

1. (petrology) diorite

• “diorite” in le Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

diorite f (plural dioriti)

1. (petrology) diorite

• editori, riedito, tiroide