/ Dictionary / Index S segmentation: Meaning and Definition of Find definitions for: seg•men•ta•tion Pronunciation: (seg"mun-tā'shun), [key] — n. division into segments. the subdivision of an organism or of an organ into more or less equivalent parts. cell division. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: segmentation (Thesaurus) segmentalized segmentation cavity Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language