/ Dictionary / Index I interlibrary loan: Meaning and Definition of Find definitions for: in'terli'brary loan' Pronunciation: [key] a system by which one library obtains a work for a user by borrowing it from another library. a loan made by this system. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. interleukin 3 interline 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