absorbance

noun

ab·​sor·​bance əb-ˈsȯr-bən(t)s  -ˈzȯr- 

: the ability of a layer of a substance to absorb radiation expressed mathematically as the negative common logarithm of transmittance

Examples of absorbance in a Sentence

Recent Examples on the Web

Rebecca’s wholehearted characteristics and attributes connect her to the Water sign Pisces, who takes on problems with others due to their absorbance and empathetic nature. —Lisa Stardust, People.com, 11 May 2025

This diaper combines the best of both worlds by using two inserts made from 55% hemp for maximum absorbance and 45% cotton to prevent flooding leaks. —Lorraine Wilde, Treehugger, 18 July 2023

Thus, in sunlit nesting environments, less pigmentation will increase the detrimental effect of transmittance, but more pigmentation will increase the detrimental effect of absorbance. —Seriously Science, Discover Magazine, 1 June 2018

Ergonomic Ski Poles with a convenient folding system, shock absorbance and superior grip offered in the collection were made in collaboration with TSL. —Demetrius Simms, Robb Report, 1 Nov. 2022

Researchers suspect that the high levels of skin pigment, melanin, in dark-skinned patients can interfere with the absorbance measurements. —Beth Mole, Ars Technica, 15 Sep. 2022

For example, the galaxy's signal tends to be a cluster of individual absorbance and emissions lines, rather than a smooth spectrum. —John Timmer, Ars Technica, 28 Feb. 2018

Word History

Etymology

absorb + -ance

First Known Use

1893, in the meaning defined above

Medical Definition

absorbance

noun

ab·​sor·​bance əb-ˈsȯr-bən(t)s  -ˈzȯr- 

: the ability of a solution or a layer of a substance to absorb radiation that is expressed mathematically as the negative common logarithm of the transmittance of the substance or solution

called also optical density