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ferruginous

[fuh-roo-juh-nuh s] /fəˈru dʒə nəs/
adjective
1.
Geology. iron-bearing:
ferruginous clays.
2.
of the color of iron rust.
Origin
1655-1665
1655-65; < Latin ferrūginus rust-colored, derivative of ferrūgin-, stem of ferrūgō iron-rust, derivative of ferrum iron; see -ous
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for ferruginous
  • Adult ferruginous hawk has mostly white underparts with dark legs, slimmer wing silhouette.
British Dictionary definitions for ferruginous

ferruginous

/fɛˈruːdʒɪnəs/
adjective
1.
(of minerals, rocks, etc) containing iron: a ferruginous clay
2.
rust-coloured
Word Origin
C17: from Latin ferrūgineus of a rusty colour, from ferrūgō iron rust, from ferrum iron
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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ferruginous in Medicine

ferruginous fer·ru·gi·nous (fə-rōō'jə-nəs, fě-)
adj.

  1. Associated with or containing iron.

  2. Having the color of iron rust; reddish-brown.

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