absorbance

[ab-sawr-buhns, -zawr-]
noun Physics.
the capacity of a substance to absorb radiation, expressed as the common logarithm of the reciprocal of the transmittance of the substance.
Also, absorbancy.


Origin:
1945–50; absorb(ent) + -ance

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World English Dictionary
absorbance (əbˈsɔːbəns, -ˈzɔː-)
 
n
physics See transmittance a measure of the light-absorbing ability of an object, expressed as the logarithm to base 10 of the reciprocal of the internal transmittance

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American Heritage
Medical Dictionary

absorbance ab·sorb·ance (əb-sôr'bəns, -zôr'-) or ab·sorb·an·cy or ab·sorb·en·cy (əb-sôr'bən-sē, -zôr'-)
n.

Abbr. A In spectrophotometry, equal to 2 minus the log of the percentage transmittance of light. Also called extinction, optical density.

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Example sentences
Your understanding of the solar spectrum and absorbance fails even a high school level understanding of physics.
Researchers are taking advantage of this perfect absorbance in highly sensitive imaging sensors and other prototype devices.
Correct the absorbance readings of the standards by subtracting the absorbance of a reagent blank carried through the method.
This shift in absorbance is apparent to the human eye as a slightly more greenish colour.
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