• synonyms


  1. a combining form with the meanings “iron,” “ferric,” used in the formation of compound words: ferriferous; ferricyanide.
Show More
Also ferro-; especially before a vowel, ferr-.

Origin of ferri-

< Latin, combining form of ferrum iron


  1. variant of ferri- and ferro- before a vowel.
Show More
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ferr

Historical Examples

  • Fir is also sounded either fur or ferr (a fur tree or a ferr tree).

    English As We Speak It in Ireland

    P. W. Joyce

  • Ferr′iage, provision for ferrying: the fare paid for such; Ferr′y-boat; Ferr′y-man.

British Dictionary definitions for ferr


combining form
  1. indicating the presence of iron, esp in the trivalent stateferricyanide; ferriferous Compare ferro-
Show More

Word Origin

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

ferr in Medicine


  1. Iron, especially ferric ion:ferritin.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.