emissivity

noun emis·siv·i·ty \ ˌe-mə-ˈsi-və-tē , ˌē-ˌmi-ˈsi- \

Definition of emissivity

plural emissivities

: 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

First Known Use of emissivity

1880

in the meaning defined above

See Words from the same year

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Medical Dictionary

emissivity

noun emis·siv·i·ty \ ˌem-ə-ˈsiv-ət-ē , ˌē-ˌmis-ˈiv- \

medical Definition of emissivity

plural emissivities

: 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