/ Dictionary / Index O omissible: Meaning and Definition of Find definitions for: o•mis•si•ble Pronunciation: (ō-mis'u-bul), [key] — adj. capable of being or allowed to be omitted. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: omissible (Thesaurus) ominous omission Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language