noun
: a chemically stable and refractory glass made of silica alone and when prepared from quartz marked by great transparency to light as well as to ultraviolet and infrared radiation — called also fused quartz, quartz glass
noun
: a chemically stable and refractory glass made of silica alone and when prepared from quartz marked by great transparency to light as well as to ultraviolet and infrared radiation — called also fused quartz, quartz glass
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012