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

---

noun

1. an intermediate stage or form

Other Word Forms

Derived Forms

• intergradation
  noun
• intergradational
  adjective
• intergradient
  adjective

Etymology

Origin of intergrade

First recorded in 1870–75; inter- + grade

Example Sentences

The subspecies cahooni and compositus of the Brown-throated Wren seem to intergrade in the southern part of the State.

From Birds from Coahuila, Mexico by Urban, Emil K.

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.

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 Durrant, Stephen D.

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 Alvarez, Ticul

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 Youngman, Phillip M.