Adjacent Words

luminance definitions

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WordNet (r) 3.0 (2005)

n
1: the quality of being luminous; emitting or reflecting light; "its luminosity is measured relative to that of our sun" [syn: luminosity, brightness, brightness level, luminance, luminousness, light]

Merriam Webster's

noun Date: 1867 1. the quality or state of being luminous 2. the luminous intensity of a surface in a given direction per unit of projected area

Oxford Reference Dictionary

n. Physics the intensity of light emitted from a surface per unit area in a given direction. Etymology: L luminare illuminate (as LUMEN)