[ab-sawrp-tiv-i-tee, -zawrp-]

noun Physics.

the property of a body that determines the fraction of incident radiation absorbed or absorbable by the body.

Nearby words

  1. absorption dynamometer,
  2. absorption edge,
  3. absorption hygrometer,
  4. absorption spectrum,
  5. absorptive,
  6. absquatulate,
  7. abstain,
  8. abstainer,
  9. abstemious,
  10. abstention

Origin of absorptivity

First recorded in 1860–65; absorptive + -ity

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for absorptivity



physics a measure of the ability of a material to absorb radiation, equal to the internal absorptance of a homogeneous layer of the material under conditions in which the path of the radiation has unit length and the boundaries of the layer have no influence
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012