ab·sorp·tiv·i·ty

[ab-sawrp-tiv-i-tee, -zawrp-]
noun Physics.
the property of a body that determines the fraction of incident radiation absorbed or absorbable by the body.

Origin:
1860–65; absorptive + -ity

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World English Dictionary
absorptivity (ˌæbsɔːpˈtɪvɪtɪ, -zɔːp-) [Click for IPA pronunciation guide]
 
n
physics a measure of the ability of a material to absorb radiation, equal to the internal absorptance of a homogeneous layer of the material under conditions in which the path of the radiation has unit length and the boundaries of the layer have no influence

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10
Absorptivity is always a great word to know.
So is flibbertigibbet. Does it mean:
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a chattering or flighty, light-headed person.
Example sentences
Emissivity, absorptivity and reflectivity have nothing to do with convective or conductive heat transfer.
At low absorptivity, the degree of saturation appeared low enough to prevent damage from freezing and thawing.
It is not widely known, that the radiation spectrum applies per the absorptivity at each wavelength.
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