Crystal meaning

noun

1. a solid formed by the solidification of a chemical and having a highly regular atomic structure

2. a crystalline element used as a component in various electronic devices

3. a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces

   Synonymscrystallization

4. colorless glass made of almost pure silica

   Synonymsquartz glassquartzvitreous silicalechatelierite

5. glassware made of quartz

6. a protective cover that protects the face of a watch

   Synonymswatch crystalwatch glass