absorptance
American Heritage Dictionary:
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ab·sorp·tance
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In illumination engineering, the ratio of the absorbed flux to the incident flux.
Oxford Dictionary of Biochemistry:
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absorptance
or absorption factor
symbol: α; the ratio of absorbed to incident radiant or luminous flux. A dimensionless physical quantity given by α=Φabs/Φ0, where Φ0 and Φabs are the incident and absorbed radiant powers, respectively.
symbol: α; the ratio of absorbed to incident radiant or luminous flux. A dimensionless physical quantity given by α=Φabs/Φ0, where Φ0 and Φabs are the incident and absorbed radiant powers, respectively.
| absorbent, absorbed dose, absorbate | |
| absorptiometer, absorption, absorption band |
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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McGraw-Hill Dictionary of Architecture & Construction
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved.
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