# absorbance

> English word · Noun · IPA /əbˈsɔɹ.bn̩s/ · frequency rank #61,243

## Definitions
1. A logarithmic measure of the amount of light that is absorbed when passing through a substance; the capacity of a substance to absorb light of a given wavelength; optical density.

## Etymology
From absorb + -ance.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/absorbance