• synonyms


[noun in-ter-greyd; verb in-ter-greyd]
  1. an intermediate grade, form, stage, etc.
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verb (used without object), in·ter·grad·ed, in·ter·grad·ing.
  1. to merge gradually, one into another, as different species through evolution.
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Origin of intergrade

First recorded in 1870–75; inter- + grade
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for intergrade

Historical Examples

  • For the present it seems best to regard the specimen merely as an intergrade.

    American Weasels

    E. Raymond Hall

  • They intergrade with trumbullensis in the size and shape of the zygomatic arches and tympanic bullae.

  • The specimen from Chanquejelve is an intergrade between the two subspecies just mentioned.

  • The two subspecies of the Violet-green Swallow, thalassina and lepida, intergrade in Coahuila.

  • The subspecies cahooni and compositus of the Brown-throated Wren seem to intergrade in the southern part of the State.

British Dictionary definitions for intergrade


verb (ˌɪntəˈɡreɪd)
  1. (intr) (esp of biological species, etc) to merge one into another
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noun (ˈɪntəˌɡreɪd)
  1. an intermediate stage or form
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Derived Formsintergradation, nounintergradational, adjectiveintergradient, adjective
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