Vitreous silica, also known as pure silica or silicon dioxide, has many synonyms that are used interchangeably in the scientific community. Some of the common synonyms include amorphous silica, fused silica, quartz glass, silica glass, and silicon oxide. These terms refer to the same material that is characterized by its high melting point, low thermal expansion, and excellent electrical insulation properties. Vitreous silica is extensively used in the manufacturing of optical fibers, semiconductor devices, and high-temperature resistant materials. Its unique properties also make it an ideal material for laboratory equipment, such as crucibles, beakers, and test tubes. Understanding the different synonyms for vitreous silica is crucial in scientific research and industrial applications.