Definition of mafic in English:

mafic

Syllabification: maf·ic
Pronunciation: /ˈmafik
 
/

adjective

Geology
Relating to, denoting, or containing a group of dark-colored, mainly ferromagnesian minerals such as pyroxene and olivine. Often contrasted with felsic.
More example sentences
  • Variably serpentinized Devonian mafic and ultramafic intrusive rocks occur in the western and northern parts of the map area.
  • The alternating bands of mafic and felsic minerals are a striking and distinctive feature of all gneisses.
  • If such adiabatic freezing were to control the ascent of hydrous mafic magmas, basalts would probably never erupt in volcanic arcs.

Origin

early 20th century: blend of magnesium and a contracted form of ferric.

Definition of mafic in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day fioritura
Pronunciation: fɪˌɔːrɪˈt(j)ʊərə
noun
an embellishment of a melody...