subspecies
sub.spe.cies \'s*b-.spe--she-z, -se-z\ \.s*b-spi-'sif-ik\ n [NL] : a subdivision of a species : as : a taxonomic category that ranks immediately below a species and designa tes a morphologically distinguishable and geographically isolated group whose members interbreed successfully with those of other subspecies of the same species where their ranges overlap : a named subdivision (as a race or variety) of a taxonomic species - sub.spe.cif.ic aj