gabbro

noun
gab·​bro | \ˈga-(ˌ)brō \
plural gabbros

Definition of gabbro 

: a granular igneous rock composed essentially of calcic plagioclase, a ferromagnesian mineral, and accessory minerals

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Other Words from gabbro

gabbroic \ ga-​ˈbrō-​ik \ adjective

Examples of gabbro in a Sentence

Recent Examples on the Web

The rise itself is a large plateau about the size of California that contains 2,500,000 cubic kilometers of most basalt and gabbro (the stuff of oceanic crust). Erik Klemetti, WIRED, "“Largest Volcano on Earth”? It Is All About Timing," 6 Sep. 2013

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gabbro.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of gabbro

circa 1828, in the meaning defined above

History and Etymology for gabbro

borrowed from Italian (Tuscan), perhaps going back to Vulgar Latin *gabrum, altered from Latin glabr-, glaber "hairless, smooth" — more at glad entry 1

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Dictionary Entries near gabbro

gabble

gabblement

gabble ratchet

gabbro

gabbroid

gabby

gabelle

Statistics for gabbro

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Time Traveler for gabbro

The first known use of gabbro was circa 1828

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More from Merriam-Webster on gabbro

Britannica.com: Encyclopedia article about gabbro

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