/ Dictionary / Index I infrangible: Meaning and Definition of Find definitions for: in•fran•gi•ble Pronunciation: (in-fran'ju-bul), [key] — adj. that cannot be broken or separated; unbreakable: infrangible moral strength. that cannot be infringed or violated; inviolable: an infrangible rule. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: infrangible (Thesaurus) inframarginal infrared 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