Crossword Genius

Luminosity (8)

Ross

I believe the answer is:

radiance

'luminosity' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for radiance that I've seen before include "A bright glow (E, not Y)" , "shine" , "This light" , "Brightness" , "Glow of joy" .)

I've seen this clue in The Sun, the King Feature Syndicate and the Sydney Morning Herald.
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