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Added 10 October 2026

diorite

/ˈdaɪ.əˌɹaɪt/ noun

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about diorite at Wordnik → Where our words come from →

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

Origin

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

From Wiktionary, via Kaikki.org (CC BY-SA)

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