subspecies

A taxonomic subdivision of a species consisting of an interbreeding, usually geographically isolated population of organisms.

In zoology and botany, a variety of a species; a climatic or geographical race recognizably different from another, yet not specifically distinguished; a conspecies.

A group somewhat lessdistinct than speciesusually are, but based on characters more important than those which characterize ordinary varieties; often, a geographical variety or race.

A rank in the classification of organisms, below species

A taxon at that rank

(biology) a taxonomic group that is a division of a species; usually arises as a consequence of geographical isolation within a species