Noun | 1. | ![]() diamond dust, frost mist, frost snow, ice crystal, ice needle, poudrin, snow mist - small crystals of ice gemstone, gem, stone - a crystalline rock that can be cut and polished for jewelry; "he had the gem set in a ring for his wife"; "she had jewels made of all the rarest stones" twins - (mineralogy) two interwoven crystals that are mirror images on each other solid - matter that is solid at room temperature and pressure |
2. | crystal - a crystalline element used as a component in various electronic devices constituent, element, component - an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system; "spare components for cars"; "a component or constituent element of a system" crystal counter - a counter tube in which an ionizing event increases conductivity crystal detector - a detector consisting of a fine wire in contact with a galena crystal; acts as a rectifier crystal microphone - a microphone in which sound waves vibrate a piezoelectric crystal that generates a varying voltage crystal pickup - a cartridge in which an output voltage is produced by the vibration of a piezoelectric crystal piezoelectric crystal - a crystal that can be used as a transducer | |
3. | crystal - a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces crystallite - any of numerous minute rudimentary crystalline bodies of unknown composition found in glassy igneous rock | |
4. | ![]() natural glass - magma of any composition that cooled very rapidly silica, silicon dioxide, silicon oxide - a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite | |
5. | crystal - glassware made of quartz | |
6. | crystal - a protective cover that protects the face of a watch protective cover, protective covering, protection - a covering that is intend to protect from damage or injury; "they had no protection from the fallout"; "wax provided protection for the floors" |