/ Dictionary / Index L lesser omentum: Meaning and Definition of Find definitions for: less'er omen'tum Pronunciation: [key] — Anat. Anat. an omentum attached to the stomach, part of the duodenum, and part of the liver and supporting the hepatic vessels. Also calledCf. greater omentum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lesser Ionic lesser panda Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language