/ Dictionary / Index I IL-2: Meaning and Definition of Find definitions for: IL-2 Pronunciation: [key] — Immunol, Pharm. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. IL-1 IL-3 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