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[ahy-den-ti-kuh l, ih-den-] /aɪˈdɛn tɪ kəl, ɪˈdɛn-/
similar or alike in every way:
The two cars are identical except for their license plates.
being the very same; selfsame:
This is the identical room we stayed in last year.
agreeing exactly:
identical opinions.
Origin of identical
1610-20; < Medieval Latin identic(us) identic + -al1
Related forms
identically, adverb
identicalness, noun
nonidentical, adjective
pseudoidentical, adjective
quasi-identical, adjective
quasi-identically, adverb
unidentical, adjective
unidentically, adverb
3. congruous, congruent, equal, matching. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for identical
Contemporary Examples
Historical Examples
  • Thus the testimony of Moses long before is identical with that of Paul.

  • I am almost sure I have seen that identical carriage before.

    The Yates Pride Mary E. Wilkins Freeman
  • When he came down again he told Mr Holt that he believed she was the identical ship they had chased the previous day.

    The Three Midshipmen W.H.G. Kingston
  • It admits of but one attribution, and that embracing an identical proposition.

    Life: Its True Genesis R. W. Wright
  • Take two autumn leaves, identical in color, and expose one to the weather, while the other is waxed and pressed in a book.

    A Color Notation Albert H. Munsell
British Dictionary definitions for identical


Also called numerically identical. being one and the same individual: Cicero and Tully are identical
Also called quantitatively identical. exactly alike, equal, or agreeing
designating either or both of a pair of twins of the same sex who developed from a single fertilized ovum that split into two Compare fraternal (sense 3)
Derived Forms
identically, adverb
identicalness, noun
Word Origin
C17: from Medieval Latin identicus, from Latin idem the same
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
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Word Origin and History for identical

1610s, as a term in logic, from Medieval Latin identicus "the same," from Late Latin identitas "identity, sameness," ultimately from comb. form of Latin idem "the same" (from id "it, that one;" see id) + demonstrative suffix -dem. General sense of "being the same or very similar" is from 1630s. Replaced Middle English idemptical (late 15c.), from Medieval Latin idemptitas "identity," from Latin idem. Related: Identically.

Online Etymology Dictionary, © 2010 Douglas Harper
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identical in Medicine

identical i·den·ti·cal (ī-děn'tĭ-kəl)

  1. Exactly equal and alike.

  2. Of or relating to a twin or twins developed from the same fertilized ovum and having the same genetic makeup and closely similar appearance; monozygotic.

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