ferromagnesian

[ fer-oh-mag-nee-zhuh n, -shuh n ]
/ ˌfɛr oʊ mægˈni ʒən, -ʃən /

adjective Mineralogy.

(of minerals and rocks) containing iron and magnesium.

Origin of ferromagnesian

First recorded in 1900–05; ferro- + magnesi(um) + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for ferromagnesian

ferromagnesian
/ (ˌfɛrəʊmæɡˈniːʒən) /

adjective

(of minerals such as biotite) containing a high proportion of iron and magnesium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for ferromagnesian

ferromagnesian
[ fĕr′ō-măg-nēzhən ]

Containing iron and magnesium. Magnetite and hornblende are ferromagnesian minerals.
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