em·is·siv·i·ty
(ĕm′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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
emissivity
(ɪmɪˈsɪvɪtɪ; ˌɛm-) n (General Physics) a measure of the ability of a surface to radiate energy; the ratio of the radiant flux emitted per unit area to that emitted by a black body at the same temperature. Symbol: ε
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
em•is•siv•i•ty
(ˌɛm əˈsɪv ɪ ti, ˈi mə-)
n. 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.
[1875–80]
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