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FERROUS

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fer⋅rous

[fer-uhs]
–adjective Chemistry.
of or containing iron, esp. in the bivalent state.

Origin:
1860–65; < L ferr(um) iron + -ous
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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fer·rous   (fěr'əs)   
adj.  Of or containing iron, especially with valence 2 or a valence lower than in a corresponding ferric compound.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

ferrous 
1865, from L. ferreus "made of iron," from ferrum "iron."
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: fer·rous
Pronunciation: 'fer-&s
Function: adjective
1 : of, relating to, or containing iron
2 : being orcontaining iron with a valence of two
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

ferrous fer·rous (fěr'əs)
adj.
Of, relating to, or containing iron, especially with a valence of 2 or a valence lower than in a corresponding ferric compound.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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