Dictionary.com
Thesaurus.com

ferromagnesian

American  
[fer-oh-mag-nee-zhuhn, -shuhn] / ˌfɛr oʊ mægˈni ʒən, -ʃən /

adjective

Mineralogy.
  1. (of minerals and rocks) containing iron and magnesium.


ferromagnesian British  
/ ˌfɛrəʊmæɡˈniːʒən /

adjective

  1. (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

ferromagnesian Scientific  
/ fĕr′ō-măg-nēzhən /
  1. Containing iron and magnesium. Magnetite and hornblende are ferromagnesian minerals.


Etymology

Origin of ferromagnesian

First recorded in 1900–05; ferro- + magnesi(um) ( def. ) + -an ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Mafic minerals are also referred to as dark-colored ferromagnesian minerals.

From Textbooks • Jan. 1, 2017

The up-pointing arrow shows increasing ferromagnesian components, specifically iron, magnesium, and calcium.

From Textbooks • Jan. 1, 2017

Biotite mica has more iron and magnesium and is considered a ferromagnesian silicate mineral.

From Textbooks • Jan. 1, 2017

Why is biotite called a ferromagnesian mineral, while muscovite is not?

From Textbooks • Jan. 1, 2015

Many of the latter are magnetite, while the others are hornblende and various ferromagnesian silicates.

From Aboriginal Remains in Verde Valley, Arizona Thirteenth Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1891-92, Government Printing Office, Washington, 1896, pages 179-262 by Mindeleff, Cosmos

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "ferromagnesian" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com