noun gab·bro \ˈga-(ˌ)brō\
plural gabbros

Definition of GABBRO

:  a granular igneous rock composed essentially of calcic plagioclase, a ferromagnesian mineral, and accessory minerals
gab·bro·ic \ga-ˈbrō-ik\ adjective

Origin of GABBRO

Italian, probably modification of Latin glaber smooth — more at glad
First Known Use: circa 1828


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