Found 2 items, similar to luminosity.
English → English (WordNet) Definition: luminosity luminosity n : the quality of being luminous; emitting or reflecting light; “its luminosity is measured relative to that of our sun” [syn: brightness, brightness level, luminance, luminousness, light]
English → English (gcide) Definition: Luminosity Luminosity \Lu`mi*nos"i*ty\, n. The quality or state of being luminous; luminousness. [1913 Webster]