noun
the quality of being luminous; emitting or reflecting light (Freq. 1)
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its luminosity is measured relative to that of our sun
• Syn: ↑brightness, ↑brightness level, ↑luminance, ↑luminousness, ↑light
• Derivationally related forms: ↑light (for: ↑light), ↑bright (for: ↑luminousness), ↑bright (for: ↑brightness), ↑luminous
• Hypernyms: ↑physical property
• Hyponyms: ↑illuminance, ↑illumination, ↑incandescence, ↑luminescence, ↑glow
Useful english dictionary. 2012.