gabbro

[ gab-roh ]

noun,plural gab·bros.Petrology.
  1. a dark granular igneous rock composed essentially of labradorite and augite.

Origin of gabbro

1
<Italian; akin to Latin glaber smooth

Other words from gabbro

  • gab·bro·ic [guh-broh-ik], /gəˈbroʊ ɪk/, gab·bro·it·ic, adjective
  • gab·broid [gab-roid], /ˈgæb rɔɪd/, adjective

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British Dictionary definitions for gabbro

gabbro

/ (ˈɡæbrəʊ) /


nounplural -bros
  1. a dark coarse-grained basic plutonic igneous rock consisting of plagioclase feldspar, pyroxene, and often olivine

Origin of gabbro

1
C19: from Italian, probably from Latin glaber smooth, bald

Derived forms of gabbro

  • gabbroic or gabbroitic, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for gabbro

gabbro

[ găb ]


  1. A usually dark, coarse-grained igneous rock composed mostly of plagioclase feldspar and clinopyroxene, and sometimes olivine. Gabbro is the coarse-grained equivalent of basalt.

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