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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 of gabbro

Italian, probably modification of Latin glaber smooth — more at glad


First Known Use: circa 1828


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to expose to danger or risk

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