BabelNet

bn:00059213n

Noun Concept

optical glass

Clear homogeneous glass of known refractive index; used to make lenses WordNet 3.0

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Clear homogeneous glass of known refractive index; used to make lenses WordNet 3.0 & Open English WordNet

A class of glass used to create optical lenses, such as that for spectacles or spyglasses. Wiktionary

IS A

HAS KIND

WordNet 3.0 & Open English WordNet

optical glass

Wiktionary

optical glass