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

However, all indications point to this area as being the region where aura and teter intergrade.

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

In northeastern Coahuila pallida seems to intergrade with castanogastris; No. 29414 has an indistinct rusty chestnut patch on its abdomen, thus resembling castanogastris.

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

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

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.

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 Findley, James S.