Breadcrumb Home > Dictionary > Index D diffusible: Meaning and Definition of Find definitions for: dif•fus•i•ble Pronunciation: (di-fy'zu-bul), [key] — adj. capable of being diffused. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diffuser diffusion ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language