maf·​ic | \ ˈma-fik How to pronounce mafic (audio) \

Definition of mafic

: of, relating to, or being a group of usually dark-colored minerals rich in magnesium and iron

Examples of mafic in a Sentence

Recent Examples on the Web Orange is hotter, in the intermediate range, and yellow is hotter still, in the mafic range. New York Times, "How Hot Can Lava Get?," 18 May 2018 Kilauea releases mafic magma, and the temperature at eruption is about 2,140 degrees Fahrenheit. New York Times, "How Hot Can Lava Get?," 18 May 2018 Ocean volcanoes form over ocean crust that's lower in silica and contain a runnier kind of hot rock called mafic magma. Sarah Gibbens, National Geographic, "No, Hawaii's Volcano Won't Trigger a Mega-Tsunami," 17 May 2018

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

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First Known Use of mafic

1912, in the meaning defined above

History and Etymology for mafic

New Latin magnesium + Latin ferrum iron + English -ic

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Time Traveler for mafic

Time Traveler

The first known use of mafic was in 1912

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Cite this Entry

“Mafic.” Dictionary, Merriam-Webster, Accessed 23 Nov. 2020.

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