verb (used without object), in·ter·grad·ed, in·ter·grad·ing.
Origin of intergrade
Examples from the Web for intergrade
Historical Examples of intergrade
For the present it seems best to regard the specimen merely as an intergrade.American Weasels
E. Raymond Hall
They intergrade with trumbullensis in the size and shape of the zygomatic arches and tympanic bullae.The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1
Stephen D. Durrant
The specimen from Chanquejelve is an intergrade between the two subspecies just mentioned.New Subspecies of the Rodent Baiomys From Central America
Robert L. Packard
The two subspecies of the Violet-green Swallow, thalassina and lepida, intergrade in Coahuila.
The subspecies cahooni and compositus of the Brown-throated Wren seem to intergrade in the southern part of the State.