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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:

Most likely this is the result of an examination of the intergrades only, for they do intergrade with the California species to the northward.

From Game Birds and Game Fishes of the Pacific Coast by Payne, Harry Thom

The two kinds intergrade also in northeastern California, although in that state S. v. daggeti, rather than S. v. ruber, is involved in the intergradation.

From Speciation of the Wandering Shrew by Findley, James S.

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 Hall, E. Raymond (Eugene Raymond)

Where the ranges of the two species meet in Washington they seem not to intergrade.

From Speciation of the Wandering Shrew by Findley, James S.

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 Durrant, Stephen D.

Passing by many interesting members of the psychological series of intergrading forms, we reach the familiar animals like the cat and dog and horse which display what is called intelligence.

From The Doctrine of Evolution Its Basis and Its Scope by Crampton, Henry Edward

In this area, therefore, the zone of intergradation between the smaller lowland shrew and the larger montane shrew is more gradual and gradually intergrading populations are found over a relatively large area.

From Speciation of the Wandering Shrew by Findley, James S.

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 Tyrrell, J. B.

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

From Speciation of the Wandering Shrew by Findley, James S.

The peloric toad-flaxes are, as a rule, found surrounded by the normal type, but without intergrading forms.

From Species and Varieties, Their Origin by Mutation by Vries, Hugo de

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