ecospecies
eco.spe.cies \'ek-o--.spe--(.)she-z, 'e--ko--, -(.)se-z\ \.ek-o--spi-'sif-ik, .e--ko--\ n : a subdivision of a cenospecies capable of free gene interchange between its members without impairment of fertility but less capable of fertile crosses with members of other subdivisions and typically more or less equivalent to the taxonomic species - eco.spe.cif.ic aj