noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The quality of being absorptive; absorptiveness.
2. 2
   (physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body wordnet
3. 3
   The fraction of radiation absorbed by a surface to the total radiation incident on the surface.
4. 4
   The constant a in the Beer's law relation A = abc, where A is the absorbance, b the path length, and c the concentration of solution. Also known as absorptive power. Formerly known as absorbency index; absorption constant; extinction coefficient.

Synonyms

All synonyms

absorption factorabsorption coefficientabsorption coefficientabsorption factor

Etymology

From absorptive + -ity.

Related phrases

absorptive powerextinction coefficient

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.