[ mir-er ]
/ ˈmɪr ər /


verb (used with object)


Music. (of a canon or fugue) capable of being played in retrograde or in inversion, as though read in a mirror placed beside or below the music.

Nearby words

  1. mirky,
  2. mirliton,
  3. miro,
  4. miromiro,
  5. mirren,
  6. mirror ball,
  7. mirror canon,
  8. mirror carp,
  9. mirror finish,
  10. mirror image


    with mirrors, by or as if by magic.

Origin of mirror

1175–1225; Middle English mirour < Old French mireo(u)r, equivalent to mir- (see mirage) + -eo(u)r < Latin -ātor -ator

Related formsmir·ror·like, adjectiveun·mir·rored, adjective

Can be confusedmere mère mirror

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mirror

British Dictionary definitions for mirror


/ (ˈmɪrə) /


a surface, such as polished metal or glass coated with a metal film, that reflects light without diffusion and produces an image of an object placed in front of it
such a reflecting surface mounted in a frame
any reflecting surface
a thing that reflects or depicts something elsethe press is a mirror of public opinion


(tr) to reflect, represent, or depict faithfullyhe mirrors his teacher's ideals
Derived Formsmirror-like, adjective

Word Origin for mirror

C13: from Old French from mirer to look at, from Latin mīrārī to wonder at

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 mirror
Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for mirror


[ mĭrər ]

An object that causes light or other radiation to be reflected from its surface, with little or no diffusion. Common mirrors consist of a thin sheet or film of metal, such as silver, behind or covering a glass pane. Mirrors are used extensively in telescopes, microscopes, lasers, fiber optics, measuring instruments, and many other devices. See more at reflection.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.