/ Dictionary / Index A absorptivity: Meaning and Definition of Find definitions for: ab•sorp•tiv•i•ty Pronunciation: (ab'sôrp-tiv'i-tē, -zôrp-), [key] — n. Physics. the property of a body that determines the fraction of incident radiation absorbed or absorbable by the body. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: absorptivity (Thesaurus) absorptive absquatulate 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