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luminance

Syllabification: (lu·mi·nance)
Pronunciation: /ˈlo͞omənəns/

Definition of luminance

noun

Physics
  • the intensity of light emitted from a surface per unit area in a given direction.
  • the component of a television signal that carries information on the brightness of the image.

Origin:

late 19th century (as a general term meaning 'light, brightness'): from Latin luminant- 'illuminating' (from the verb luminare) + -ance

luminance in other Oxford dictionaries

Definition of luminance in the British & World English dictionary

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