emissivity

[ em-uh-siv-i-tee, ee-muh- ]

nounThermodynamics.
  1. 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 of emissivity

1
First recorded in 1875–80; emissive + -ity

Words Nearby emissivity

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British Dictionary definitions for emissivity

emissivity

/ (ɪmɪˈsɪvɪtɪ, ˌɛm-) /


noun
  1. 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

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