Nouns

(n)crystala solid formed by the solidification of a chemical and having a highly regular atomic structure
(n)crystala crystalline element used as a component in various electronic devices
(n)crystal, crystallizationa rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces
(n)quartz glass, quartz, vitreous silica, lechatelierite, crystalcolorless glass made of almost pure silica
(n)crystalglassware made of quartz
(n)crystal, watch crystal, watch glassa protective cover that protects the face of a watch