/ Dictionary / Index A ascon: Meaning and Definition of Find definitions for: as•con Pronunciation: (as'kon), [key] — n. a type of sponge having an oval shape and a thin body wall with pores leading directly into the spongocoel. Cf. leucon, sycon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ascomycetous asconoid Related Content Daily Word Quiz: reiterate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language