/ Dictionary / Index O omer: Meaning and Definition of Find definitions for: o•mer Pronunciation: (ō'murSeph. Heb.ô&sylpmer'Ashk. Heb.ō'mer), [key] — n. a Hebrew unit of dry measure, the tenth part of an ephah. (usually cap.)the period of 49 days extending from the second day of Passover to the first day of Shavuoth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. omentum omertà* Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language