intergrade

American  

[in-ter-grayd, in-ter-grayd] / ˈɪn tərˌgreɪd, ˌɪn tərˈgreɪd /

noun

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

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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

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noun

1. an intermediate stage or form

Other Word Forms

• intergradation
  noun
• intergradational
  adjective
• intergradient
  adjective

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Etymology

Origin of intergrade

First recorded in 1870–75; inter- + grade

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Example Sentences

See Examples For:

intergrade intergrading

It is clear, however, that these smaller animals intergrade with the larger shrews of the more western mountains.

From Speciation of the Wandering Shrew by James S. Findley

I find these kinds to intergrade continuously one with the next in the manner described and conclude that all are of a single species.

From Speciation of the Wandering Shrew by James S. Findley

It is likely that this specimen is an intergrade between C. l. concolor and C. l. dunni, the other subspecies present in Guatemala.

From A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America) by John Wellman

In this area T. t. taxus and T. t. fippsi may intergrade.

From Mammals of the Grand Mesa, Colorado by Sydney Anderson

The specimen in no way represents an intergrade between C. l. dunni and l. lineatus.

From A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America) by John Wellman

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

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 Henry Edward Crampton

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

But I have never found intergrading color forms, and have not yet satisfied myself as to whether or not the two should be entitled to specific rank.

From Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. by George Francis Atkinson

There the lower elevations west of the Wasatch and Uinta mountains are inhabited by S. v. vagrans, the higher elevations by obscurus and where the ranges of the two abut intergrading populations occur.

From Speciation of the Wandering Shrew by James S. Findley

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