Definition of dioptrics noun from the Oxford Advanced American Dictionary

 

dioptrics

 noun
noun
NAmE//daɪˈɑptrɪks//
 
[uncountable](physics)
 
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the scientific study of refraction (refract ) (= the way light changes direction when it goes through glass, etc.)
 
adjective
See the Oxford Advanced Learner's Dictionary entry: dioptrics