gabbro

noun
gab·​bro | \ ˈga-(ˌ)brō How to pronounce gabbro (audio) \
plural gabbros

Definition of gabbro

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

Other Words from gabbro

gabbroic \ ga-​ˈbrō-​ik How to pronounce gabbro (audio) \ adjective

Examples of gabbro in a Sentence

Recent Examples on the Web Not getting a sample of this gabbro was frustrating, but scientists are already extracting valuable lessons from the momentary failure. Robin George Andrews, Scientific American, 12 Aug. 2021 Basalt and gabbro rocks, for example, have tiny defects in their crystals that could release electrical charges into the air. Christina Nunez, National Geographic, 16 Apr. 2019 Basalt and gabbro rocks, for example, have tiny defects in their crystals that could release electrical charges into the air. Christina Nunez, National Geographic, 16 Apr. 2019 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, 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 1776, 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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The first known use of gabbro was circa 1776

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Dictionary Entries Near gabbro

gabble ratchet

gabbro

gabbroid

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Cite this Entry

“Gabbro.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gabbro. Accessed 17 Aug. 2022.

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More from Merriam-Webster on gabbro

Britannica.com: Encyclopedia article about gabbro

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