Crossword Genius

Science of light (6)

Ross

I believe the answer is:

optics

'science of light' is the definition.
(I've seen this before)

This is all the 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" .)

I've seen this clue in the Newsday.
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