/ Dictionary / Index A affinity card: Meaning and Definition of Find definitions for: affin'ity card" Pronunciation: [key] a credit card issued in conjunction with an organization, as a university or sports club. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. affinity affirm Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language