ABSORBaNCY

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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