/ Dictionary / Index D dissyllable: Meaning and Definition of Find definitions for: dis•syl•la•ble Pronunciation: (di-sil'u-bul, dis-sil'-, dī'sil-), [key] — n. disyllable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dissyllable (Thesaurus) dissyllabize dissymmetry Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language