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intergrade

American  
[in-ter-greyd, in-ter-greyd] / ˈɪn tərˌgreɪd, ˌɪn tərˈgreɪd /

noun

  1. an intermediate grade, form, stage, etc.


verb (used without object)

intergraded, intergrading
  1. to merge gradually, one into another, as different species through evolution.

intergrade British  

verb

  1. (intr) (esp of biological species, etc) to merge one into another

"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

noun

  1. an intermediate stage or form

"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

Other Word Forms

Etymology

Origin of intergrade

First recorded in 1870–75; inter- + grade

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Of the Black Phoebe, the two subspecies semiatra and nigricans intergrade in Coahuila.

From Birds from Coahuila, Mexico by Emil K. Urban

He noted that the animals from this region intergrade with planirostris.

From The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. by Stephen D. Durrant

T. b. internatus and T. b. cultellus probably intergrade east of the Sangre De Cristo Range in the vicinity of the Colorado-New Mexico boundary.

From Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado by Phillip M. Youngman

The specimen appears to be an intergrade between T. s. striatus and T. s. ohionensis; it is probably best referred to the latter subspecies which it resembles in having short nasals.

From Comments on the Taxonomy and Geographic Distribution of Some North American Rodents by E. Raymond (Eugene Raymond) Hall

This subspecies consists of many highly variable local populations, and the marginal populations intergrade freely with adjacent races.

From The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. by Stephen D. Durrant

Therefore, ocius is properly to be treated as a subspecies of the series of intergrading forms of which talpoides is the earliest named.

From The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. by Stephen D. Durrant

It inhabits the Barren Grounds from Hudson Bay north-westward to the Mackenzie, and is represented by related and intergrading forms nearly throughout Alaska, and southward in the Rocky Mountains to the northern United States.

From A Journey from Prince of Wales's Fort in Hudson's Bay to the Northern Ocean in the Years 1769, 1770, 1771, 1772 New Edition with Introduction, Notes, and Illustrations by J. B. Tyrrell

Some of the animals are practically indistinguishable in color and there are intergrading cranial characters in the nasals, zygomatic arches and tympanic bullae.

From The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. by Stephen D. Durrant

Sierra Nevada of California, north at least to El Dorado County, intergrading northerly with S. v. vagrans.

From Speciation of the Wandering Shrew by James S. Findley

These intergrading forms I have only seen in Mexican material.

From North American Species of Cactus by John Merle Coulter

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