/ Dictionary / Index H heterosporous: Meaning and Definition of Find definitions for: het•er•os•po•rous Pronunciation: (het"u-ros'pu-rus, het"ur-u-spôr'us, -spōr'-), [key] — adj. Bot. having more than one kind of spore. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: heterosporous (Thesaurus) heterosis heterospory Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language