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diabase

noun di·a·base \ ˈdī-ə-ˌbās \
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Definition of diabase

1 archaic : diorite
2 chiefly British : an altered basalt
3 : a fine-grained rock of the composition of gabbro but with an ophitic texture
—

diabasic

play \ˌdī-ə-ˈbā-sik\ adjective

Origin and Etymology of diabase

French, probably from Greek diabasis act of crossing over, from diabainein to cross over, from dia- + bainein to go — more at come

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  1. See words that rhyme with diabase Britannica.com: Encyclopedia article about diabase

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