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