/ Dictionary / Index D dianthus: Meaning and Definition of Find definitions for: di•an•thus Pronunciation: (dī-an'thus), [key] — pl. -thus•es. any of numerous plants belonging to the genus Dianthus, of the pink family, as the carnation or sweet william. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dianthus (Thesaurus) dianoia diapason Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language