optical glass
optical glass · optical glasses
A class of glass used to create optical lenses, such as that for spectacles or spyglassesA class of glass used to create optical lenses, such as that for spectacles or spyglasses
Meaning
1 senses(countable, uncountable)A class of glass used to create optical lenses, such as that for spectacles or spyglasses
clear homogeneous glass of known refractive index; used to make lenses
Origin
From optical + glass from being the type of glass used for optics.From optical + glass from being the type of glass used for optics.
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Forms
plural: optical glasses| Singular | optical glass |
|---|---|
| Plural | optical glasses |
regular
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable