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Meaning of word optical crown from English dictionary with examples, synonyms and antonyms.

optical crown   noun

Meaning : Optical glass of low dispersion and low refractive index.

Synonyms : crown glass, optical crown glass

चौपाल

Optical crown ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Optical crown ka matlab kya hota hai?