Crystal
01
a solid substance formed when a chemical compound solidifies, with atoms arranged in a highly regular, repeating pattern
例
Salt forms a cubic crystal when it solidifies.
02
a rock or mineral formed by the solidification of a substance, with regularly repeating internal structure and often distinct external faces
例
The geologist collected several quartz crystals from the cave.
03
a crystalline component used in electronic devices to control or stabilize electrical signals
例
Circuit boards contain crystal oscillators for stable frequencies.
04
a transparent protective cover that shields the face of a watch
例
The watch crystal was scratched after falling on the pavement.
05
glassware made from quartz or containing quartz components, valued for clarity, brilliance, and decorative or functional use
例
The dining table was set with crystal glasses.
06
colorless, high-purity glass, typically made from nearly pure silica, used as a raw material for decorative, functional, or industrial purposes
例
The laboratory used a container made of clear crystal.
07
クリスタル, メタンフェタミンの結晶
methamphetamine, especially in crystalline form, often smoked or ingested
Slang
例
He was caught with crystal in his backpack.
彼はバックパックにクリスタルを持っているところを捕まった。
