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(əbˈsɔːbəns; -ˈzɔː-)
(General Physics) physics a measure of the light-absorbing ability of an object, expressed as the logarithm to base 10 of the reciprocal of the internal transmittance. See transmittance
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(æbˈsɔr bəns, -ˈzɔr-)

n. Physics.
the capacity of a substance to absorb radiation.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.absorbance - (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation
density, denseness - the amount per unit size
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
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References in periodicals archive ?
Normalization of the above absorbances is carried out according to the following equations:
Absorbances of samples were scanned (Beckman DU-800) from 350 to 550 run in 1-mL airblanked quartz cuvettes.
There was a significant difference between raw absorbances of the control plasma extract and the treated dams at 24 hr, with a 10-fold dilution each (p < 0.005; Figure 2).
Samples containing talc (whose particle size of >1.0 [micro]m exceeded that of the acrylate stickles used) were allowed to settle for a day prior to the zeta measurement; the absorbances of the other samples were taken immediately upon sampling.
In attempts to correlate the density with the MR spectra, the correlation coefficient between polymer densities and the scaled absorbances of fourteen grades were calculated.
The collected fractions were pooled and concentrated, and the absorbances were measured at 235, 280, and 560-nm with a spectrophotometer (Pharmacia Ultraspec III).
Real-time NIR monitoring of the syrup is possible because absorbances of DEs fall within the NIR spectrum of 900 to 1,800 nanometers.
To justify using the differential thermal lens system for indirect detection, we measured the changes in absorbance at the 2 x 10( sub-7) level with background absorbances of 0.05 au.
(3)) depends on two factors, the first factor contains terms which depend on the measured absorbances inside (subscript 1) and outside (subscript 3) the IS detector, and the second factor contains a ratio of the detection efficiency at the excitation, [lambda], and emission, [[lambda].sub.f], wavelengths.
The absorbances of all the dilutions were taken after 30 minutes at [lambda] max 517nm using methanol as blank.
Moreover, modern spectrophotometers are sufficiently stable that even a single-beam instrument, in which the absorbances for irradiated and nonirradiated specimens for each time period are measured individually, will allow accurate determination of the absorbance difference.
The absorbances of vibrations at 821 [cm.sup.-1] and 1566 [cm.sup.-1] vanished and appearance of new vibrations at 1740 [cm.sup.-1] were noticed.