Noun
- 1. absorption coefficient, coefficient of absorption, absorptance, coefficient
- usage: a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber; "absorptance equals 1 minus transmittance"
WordNet 3.0 Copyright © 2006 by Princeton University.
All rights reserved.Definition and meaning of absorptance (Dictionary)