/ Dictionary / Index S sedum: Meaning and Definition of Find definitions for: se•dum Pronunciation: (sē'dum), [key] — n. any fleshy plant belonging to the genus Sedum, of the stonecrop family, usually having small, overlapping leaves and yellow, white, or pink flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sedum (Thesaurus) sedulous see Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language