/ Dictionary / Index P persorption: Meaning and Definition of Find definitions for: per•sorp•tion Pronunciation: (pur-sôrp'shun, -zôrp'-), [key] — n. Physical Chem. the deep penetration of a liquid into a highly porous solid, resulting in an intimate mixture. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. person-year perspective Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language