intergrade

[noun in-ter-greyd; verb in-ter-greyd]
verb (used without object), in·ter·grad·ed, in·ter·grad·ing.
  1. to merge gradually, one into another, as different species through evolution.

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 of intergrade


British Dictionary definitions for intergrade

intergrade

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