/ Dictionary / Index O obelus: Meaning and Definition of Find definitions for: ob•e•lus Pronunciation: (ob'u-lus), [key] — pl. -li a mark (− or ÷) used in ancient manuscripts to point out spurious, corrupt, doubtful, or superfluous words or passages. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. obelize obento Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language