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emissivity

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em⋅is⋅siv⋅i⋅ty

  [em-uh-siv-i-tee, ee-muh-]
Use emissivity in a Sentence
–noun Thermodynamics.
the ability of a surface to emit radiant energy compared to that of a black body at the same temperature and with the same area.
Origin:
1875–80; emissive + -ity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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AEP Span
Go Green With AEP Span Steel Roofs Energy Efficient, Cool Color Roofs
www.aepspan.com
em·is·siv·i·ty   (ěm'ĭ-sĭv'ĭ-tē)   
n.  The ratio of the radiation emitted by a surface to the radiation emitted by a blackbody at the same temperature.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: emis·siv·i·ty
Pronunciation: "em-&-'siv-&t-E, "E-"mis-'iv-
Function: noun
Inflected Form: plural -ties
: the relative power of a surface to emit heat by radiation : the ratio of the radiant energy emitted by a surface to that emitted by a blackbody at the same temperature
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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