Noun
The quality or state of being luminous; luminousness.
Source: Webster's dictionaryCertein bodies... become luminous when heated. Their luminosity disappears after some time, but the capacity of becoming luminous afresh through heat is restored to them by the action of a spark, and also by the action of radium. Marie Curie
I believe that there is luminosity hiding in the shadow of the mundane. And things that hover at the periphery of our vision. If that's magic, then I believe in it. Natasha Mostert
I like light, color, luminosity. I like things full of color and vibrant. Oscar de la Renta
The perceptions of middle age have their own luminosity. Gail Sheehy
No matter how long the room has been dark, an hour or a million years, the moment the lamp of awareness is lit the entire room becomes luminous. You are that luminosity. You are that clear light. Tenzin Wangyal Rinpoche
its luminosity is measured relative to that of our sun Source: Internet