absorptivity

English

Etymology

absorptive +‎ -ity

Pronunciation
  • (US) IPA(key): /æbˌsɔɹpˈtɪvə.ti/, /əbˌsɔɹpˈtɪvə.ti/
  • Audio (US)(file)

Noun

absorptivity (plural absorptivities)

  1. The quality of being absorptive; absorptiveness. [First attested in the mid 19th century.][1]
  2. (thermodynamics) The fraction of radiation absorbed by a surface to the total radiation incident on the surface. [First attested in the mid 19th century.][1]
  3. (analytical chemistry) 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.

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References
  1. Lesley Brown, editor-in-chief, William R. Trumble and Angus Stevenson, editors (2002), “absorptivity”, in The Shorter Oxford English Dictionary on Historical Principles, 5th edition, Oxford, New York, N.Y.: Oxford University Press, →ISBN, page 9.
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