/ Dictionary / Index I Iletin: Meaning and Definition of Find definitions for: Il•e•tin Pronunciation: (il'i-tin), [key] — Pharm., Trademark. Pharm.,Trademark. a brand of insulin (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ilesha ileum 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