gabbro
gab·bro
noun \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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