gabbro

[ gab-roh ]

/ ˈgæb roʊ /

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noun, plural gab·bros.Petrology.

a dark granular igneous rock composed essentially of labradorite and augite.

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Origin of gabbro

<Italian; akin to Latin glaber smooth

OTHER WORDS FROM gabbro

gab·bro·ic

[guh-broh-ik], /gəˈbroʊ ɪk/, gab·bro·it·ic, adjectivegab·broid

[gab-roid], /ˈgæb rɔɪd/, adjective

Words nearby gabbro

gabapentin, Gabar, gabardine, Gabbai, gabble, gabbro, gabby, Gabe, gabelle, gaberdine, gaberlunzie

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use gabbro in a sentence

Peridotite and gabbro form much of the eastern peninsula (Banggai).
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5|Various
Gabbro, a typical basic rock, corresponds to basalt in chemical composition.
The Elements of Geology|William Harmon Norton
The gneisses appear to be due in many cases to the crushing and shearing of deep-seated igneous rocks, such as granite and gabbro.
The Elements of Geology|William Harmon Norton
The one exception is on Caribou Ridge, which is capped by a much altered gabbro.
The Long Labrador Trail|Dillon Wallace

These volcanic materials are pierced by serpentine, gabbro and granite.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1|Various

British Dictionary definitions for gabbro

gabbro

/ (ˈɡæbrəʊ) /

noun plural -bros

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

Derived forms of gabbro

gabbroic or gabbroitic, adjective

Word Origin for gabbro

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

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′rō ]

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.