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Definition of optics noun from the Oxford Advanced Learner's Dictionary

 

optics

 noun
noun
BrE BrE//ˈɒptɪks//
 
; NAmE NAmE//ˈɑːptɪks//
 
[uncountable]
 
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the scientific study of sight and light see also fibre optics More Like This Uncountable nouns ending in –ics athletics, ballistics, civics, cybernetics, genetics, geophysics, gymnastics, linguistics, optics, orthodontics, orthopaedics, phonetics, phonics, physics, semantics, semiotics, stylistics, thermodynamicsSee worksheet.
See the Oxford Advanced American Dictionary entry: optics

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