Diabase

//ˈdaɪ.əˌbeɪs// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A fine-grained igneous rock composed mostly of pyroxene and feldspar. countable, uncountable

Synonyms

All synonyms
doleritedoleritestone

Etymology

From French diabase, from Ancient Greek διάβασις (diábasis).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.