intergrade

American  

[in-ter-grayd, in-ter-grayd] / 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

---

noun

1. an intermediate stage or form

Other Word Forms

• intergradation
  noun
• intergradational
  adjective
• intergradient
  adjective

---

Etymology

Origin of intergrade

First recorded in 1870–75; inter- + grade

---

Example Sentences

See Examples For:

intergrade intergrading

A. r. tenuirostris and boucardi seem to intergrade in central and even southern Coahuila.

From Birds from Coahuila, Mexico by Emil K. Urban

The specimen from Jaumave is clearly M. f. frenata, but the other from northwest of Altamira has many characters of the subspecies M. f. tropicalis and is an intergrade between the two subspecies.

From The Recent Mammals of Tamaulipas, Mexico by Ticul Alvarez

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

From Birds from Coahuila, Mexico by Emil K. Urban

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

Remarks.—One specimen from Kanab is an intergrade between trumbullensis and absonus.

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

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

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

No. 31633 shows no sign of intergrading with J. p. phaeonotus to the south.

From Birds from Coahuila, Mexico by Emil K. Urban

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

Random Word

Spin the wheel and learn a new word!

---