CRYSTAL

Definition

1. noun a solid formed by the solidification of a chemical and having a highly regular atomic structure.
2. noun a crystalline element used as a component in various electronic devices.
3. noun a rock formed by the solidification of a substance. — synonyms: crystallization
4. noun colorless glass made of almost pure silica. — synonyms: quartz_glass, quartz, vitreous_silica, lechatelierite
5. noun glassware made of quartz.
6. noun a protective cover that protects the face of a watch. — synonyms: watch_crystal, watch_glass