Mafic Definition

măfĭk
adjective
Of or pertaining to igneous rocks that are rich in dark-colored minerals and that contain magnesium and iron and a comparatively low level of silica.
Webster's New World
noun
A rock with such properties.
Wiktionary

Other Word Forms of Mafic

Noun

Singular:
mafic
Plural:
mafics

Origin of Mafic

  • ma(gnesium) Latin f(errum) iron –ic

    From American Heritage Dictionary of the English Language, 5th Edition

  • Blend of magnesium and ferric.

    From Wiktionary

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