/ Dictionary / Index S subsellium: Meaning and Definition of Find definitions for: sub•sel•li•um Pronunciation: (sub-sel'ē-um), [key] — pl. -sel•li•a misericord (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subsegment subsequence Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language