intergrade

American  

[in-ter-greyd, in-ter-greyd] / 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

Etymology

Origin of intergrade

First recorded in 1870–75; inter- + grade

Example Sentences

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 Wellman, John

Previously the two kinds were thought not to intergrade and were regarded as two species.

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

In color, some specimens seem to intergrade toward aureus.

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

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.

If Geomys lutescens major Davis is correctly judged to intergrade with Geomys bursarius majusculus Swenk, the name for the full species will be Geomys bursarius because bursarius is the oldest name among those available.

From Subspeciation in Pocket Gophers of Kansas, [KU. Vol. 1 No. 11] by Hall, E. Raymond (Eugene Raymond)