Dictionary

luminance

noun lu·mi·nance \ˈlü-mə-nən(t)s\

Definition of LUMINANCE

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

Examples of LUMINANCE

  1. <the emerald had a pure, icy green luminance>
  2. <the landscapes of the French painter Claude Lorraine have a unique luminance that no other artist has quite captured>

First Known Use of LUMINANCE

1867

luminance

noun lu·mi·nance \ˈlü-mə-nən(t)s\   (Medical Dictionary)

Medical Definition of LUMINANCE

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

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