• synonyms


  1. variant of ferri-: ferroconcrete. In chemical terminology, the meanings of ferri- and ferro- are specialized to correspond to ferric and ferrous.
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Origin of ferro-

< Latin ferr(um) iron + -o-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for ferro-


combining form
  1. indicating a property of iron or the presence of ironferromagnetism; ferromanganese
  2. indicating the presence of iron in the divalent stateferrocyanide Compare ferri-
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Word Origin for ferro-

from Latin ferrum iron
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

Word Origin and History for ferro-

before vowels ferr-, word-forming element indicating the presence of iron, from Latin ferro-, comb. form of ferrum "iron," possibly of Semitic origin, via Etruscan [Klein].

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Online Etymology Dictionary, © 2010 Douglas Harper

ferro- in Medicine


  1. Iron:ferrokinetics.
  2. Ferrous iron:ferroprotein.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.