gabbro

[gab-roh] Origin

gab·bro

[gab-roh]
noun, plural gab·bros. Petrology.
a dark granular igneous rock composed essentially of labradorite and augite.

Origin:
< Italian; akin to Latin glaber smooth

gab·bro·ic [guh-broh-ik] , gab·bro·it·ic, adjective
gab·broid [gab-roid] , adjective
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Gabbro is always a great word to know.
So is interrobang. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
Collins
World English Dictionary
gabbro (ˈɡæbrəʊ)
 
n , pl -bros
a dark coarse-grained basic plutonic igneous rock consisting of plagioclase feldspar, pyroxene, and often olivine
 
[C19: from Italian, probably from Latin glaber smooth, bald]
 
gab'broic
 
adj
 
gabbro'itic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

gabbro
"type of igneous rock," 1837, from It. (Tuscan), from L. glaber "bare, smooth, bald."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
gabbro   (gāb'rō)  Pronunciation Key 
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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