Emissivity Definition

ĕmĭ-sĭvĭ-tē
emissivities
noun
The relative ability of a surface to radiate energy as compared with that of an ideally black surface under the same conditions.
Webster's New World
The ratio of the radiation emitted by a surface to the radiation emitted by a blackbody at the same temperature.
American Heritage

Other Word Forms of Emissivity

Noun

Singular:
emissivity
Plural:
emissivities

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emissivity