[ em-uh-siv-i-tee, ee-muh- ]
/ ˌɛm əˈsɪv ɪ ti, ˈi mə- /
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.
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Words nearby emissivity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for emissivity
The emissivity increases with the temperature, else no state of thermal equilibrium could be reached.
British Dictionary definitions for emissivity
/ (ɪmɪˈsɪvɪtɪ, ˌɛm-) /
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 temperatureSymbol: ε
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012