gabbro

play
noun gab·bro \ˈga-(ˌ)brō\

Definition of gabbro

plural

gabbros

  1. :  a granular igneous rock composed essentially of calcic plagioclase, a ferromagnesian mineral, and accessory minerals

gabbroic

play \ga-ˈbrō-ik\ adjective

Origin and Etymology of gabbro

borrowed from Italian (Tuscan), perhaps going back to Vulgar Latin *gabrum, altered from Latin glabr-, glaber “hairless, smooth” — more at 1glad


First Known Use: circa 1828


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WORD OF THE DAY

to cast off or become cast off

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