optical glass
English
Etymology
optical + glass from being the type of glass used for optics
Noun
optical glass (countable and uncountable, plural optical glasses)
- A class of glass used to create optical lenses, such as that for spectacles or spyglasses
Hyponyms
- crown glass
- flint glass
- natural glass (optometry) ("glass" (not plastic) lens glass for eyeglasses)
See also
- organic glass (plastic lens plastics)