/ Dictionary / Index D diffusate: Meaning and Definition of Find definitions for: dif•fu•sate Pronunciation: (di-fy'zāt), [key] — n. Physical Chem. (in dialysis) the solution or the crystalline material that passes into it through the semipermeable membrane; dialyzate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diffractometer diffuse Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language