Crossword Genius

Science of light (6)

Ross

I believe the answer is:

optics

'science of light' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for optics that I've seen before include "Organs of sight, eyes" , "Spirit measures" , "Science of vision/light" , "Devices to measure out alcohol" , "Science concerned with vision" .)

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