/ Dictionary / Index S subspecies: Meaning and Definition of Find definitions for: sub•spe•cies Pronunciation: (sub'spē"shēz, sub-spē'-), [key] — pl. -cies. a subdivision of a species, esp. a geographical or ecological subdivision. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subspecies (Thesaurus) subspecialty subspecific Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language