/ Dictionary / Index P phone-in: Meaning and Definition of Find definitions for: phone-in Pronunciation: (fōn'in"), [key] — n., adj. call-in. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phone-in (Thesaurus) phone book phonematic Related Content Daily Word Quiz: cosmology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language