optical glass
English edit
Etymology edit
optical + glass from being the type of glass used for optics
Noun edit
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 edit
- crown glass
- flint glass
- natural glass (optometry) ("glass" (not plastic) lens glass for eyeglasses)
See also edit
- organic glass (plastic lens plastics)