Etymology

absorptance

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Today it means: Absorbed radiation and incident radiation in a ratio format; a measurement that shows how well a surface absorbs radiation. Full definition →

First used First attested in the mid 20ᵗʰ century.English absorption ← Latin absorptiō ← Proto-Italic *sorβeō
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The story

  1. Proto-Indo-European*h₂ep
  2. Proto-Indo-European*h₂epó
  3. Proto-Italic*ap
  4. Latinab
  5. Latinab-
  6. Proto-Indo-European*srebʰ-
  7. Proto-Indo-European*srobʰéyeti
  8. Proto-Italic*sorβeō
  9. Latinsorbeō
  10. Latinabsorbeō
  11. Latinabsorptiō
  12. Englishabsorption
  13. English todayabsorptance

Circa 20th century, from absorption + -ance.

First known use, by meaning

  • First attested in the mid 20ᵗʰ century. Absorbed radiation and incident radiation in a ratio format; a measurement that shows how well a surface absorbs radiation.

Etymology from Wiktionary, CC BY-SA 4.0.