OPTICAL CROWN GLASS

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Optical glass of low dispersion and low refractive index

Synonyms:

crown glass; optical crown; optical crown glass

Classified under:

Nouns denoting substances

Hypernyms ("optical crown glass" is a kind of...):

optical glass (clear homogeneous glass of known refractive index; used to make lenses)

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