/ Dictionary / Index A abomasus: Meaning and Definition of Find definitions for: ab•o•ma•sus Pronunciation: (ab"u-mā'sus), [key] — pl. -si abomasum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. abomasum A-bomb 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