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Definition of Lens blank
1. Noun. A rough, opaque piece of glass of suitable size, design and composition for use, when ground and polished, as a multifocal lens for use in a pair of eyeglasses. ¹
¹ Source: wiktionary.com
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1. Noun. A rough, opaque piece of glass of suitable size, design and composition for use, when ground and polished, as a multifocal lens for use in a pair of eyeglasses. ¹
¹ Source: wiktionary.com