/ Dictionary / Index O ordinary income: Meaning and Definition of Find definitions for: or'dinary in'come Pronunciation: [key] taxable income, as salary and wages, other than capital gains. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ordinary differential equation ordinary jubilee 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