/ Dictionary / Index S subsegment: Meaning and Definition of Find definitions for: sub•seg•ment Pronunciation: (sub-seg'munt, sub'seg"-), [key] — n. a part or division of a segment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subsection subsellium 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