n.
Pronunciation: ' d ī - ə - ˌ b ā s
Function: noun
Etymology: French, probably from Greek diabasis act of crossing over, from diabainein to cross over, from dia- + bainein to go ― more at COME
Date: circa 1816
1 archaic : DIORITE
2 chiefly British : an altered basalt
3 : a fine-grained rock of the composition of gabbro but with an ophitic texture
– di · a · ba · sic \ ˌ d ī - ə - ' b ā -sik \ adjective