emissivity

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noun

The energy-emitting propensity of a surface, usually measured at a specific wavelength.

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Meanings

nounemissivity (plural emissivities)

plural emissivities

  1. natural sciencesThe energy-emitting propensity of a surface, usually measured at a specific wavelength.

Origin

From emissive + -ity.

Full word history & related roots →
Cite this entry
APA

emissivity. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/emissivity

MLA

“emissivity.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/emissivity. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “emissivity,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/emissivity.

Source: emissivity on Wiktionary, CC BY-SA 4.0.