/ Dictionary / Index P polydisperse: Meaning and Definition of Find definitions for: pol•y•dis•perse Pronunciation: (pol"ē-di-spûrs'), [key] — adj. Physical Chem. of or noting a sol that contains particles of different sizes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polydipsia polydomous Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language