Main Entry: sub·spe·cies

Pronunciation: \ˈsəb-ˌspē-shēz, -sēz\

Function: noun

: a subdivision of a species: as a : a category in biological classification that ranks immediately below a species and designates a population of a particular geographical region genetically distinguishable from other such populations of the same species and capable of interbreeding successfully with them where its range overlaps theirs b : a named subdivision (as a race or variety) of a species

—sub·spe·cif·ic \ˌsəb-spi-ˈsif-ik\ adjective