| 单词 | crystal |
| 释义 | crystal —crystallike, adj. /kris"tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem. , Mineral. a solid body having a characteristic internal structure and enclosed by symmetrically arranged plane surfaces, intersecting at definite and characteristic angles. 4. anything made of or resembling such a substance. 5. a single grain or mass of a crystalline substance. 6. glass of fine quality and a high degree of brilliance. 7. articles, esp. glassware for the table and ornamental objects, made of such a glass. 8. the glass or plastic cover over the face of a watch. 9. Radio. a. the piece of germanium, silicon, galena, or the like forming the essential part of a crystal detector. b. the crystal detector itself. 10. Electronics. a quartz crystal ground in the shape of a rectangular parallelepiped, which vibrates strongly at one frequency when electric voltages of that frequency are placed across opposite sides: used to control the frequency of an oscillator (crystal oscillator), as of a radio transmitter. 11. Slang. any stimulant drug in powder form, as methamphetamine or PCP. adj. 12. composed of crystal. 13. resembling crystal; clear; transparent. 14. Radio. pertaining to or employing a crystal detector. 15. indicating the fifteenth event of a series, as a wedding anniversary. See table under wedding anniversary. v.t. 16. to make into crystal; crystallize. 17. to cover or coat with, or as if with, crystal (usually fol. by over). [bef. 1000; ME cristal(le), OE cristalla < ML cristallum, L crystallum < Gk krýstallos clear ice, rock crystal, deriv. of krystaínein to freeze; see CRYO-] |
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