n., pl., -bros.
A usually coarse-grained igneous rock composed chiefly of calcic plagioclase and pyroxene. Also called norite.
[Italian, perhaps from Latin glaber, bald, beardless.]
gabbroic gab·bro'ic (gă-brō'ĭk) or gab'broid' (găb'roid') adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
