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emittance

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WordReference Random House Unabridged Dictionary of American English © 2026

e•mit•tance n. [Optics.]

Opticsthe total flux emitted per unit area. Cf. luminous emittance, radiant emittance.

emit + -ance 1935–40

'emittance' also found in these entries (note: many are not synonyms or translations):

belch - luminous emittance - radiant emittance

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