/ Dictionary / Index I interfibrillar: Meaning and Definition of Find definitions for: in•ter•fi•bril•lar Pronunciation: (in"tur-fī'bru-lur), [key] — adj. situated between fibrils. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. interfertile interfile 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