crystal
/ˈkrɪstəl/noun
1
- a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces晶体。
1.1
- Chemistry any solid consisting of a symmetrical, ordered, three-dimensional aggregation of atoms or molecules【化】结晶; 结晶体。
1.2
- Electronics a crystalline piece of semiconductor used as an oscillator or transducer【电子】（用作振荡器或变换器的半导体）晶体。
1.3
- mass noun a clear transparent mineral, especially quartz水晶（尤指石英）。
1.4
- a piece of crystalline substance believed to have healing powers（据信有治疗功效的）结晶体。
2
- （亦作crystal glass）[mass noun] highly transparent glass with a high refractive index水晶玻璃, 晶质玻璃, 富铅玻璃：
as modifier a crystal chandelier水晶玻璃枝形吊灯。
2.1
- articles made of such glass晶质玻璃制品：
a collection of crystal
大量晶质玻璃制品。
2.2
- count noun the glass over a watch face（手表表面上的）水晶玻璃盖
3
- as modifier clear and transparent like crystal晶莹的, 清澈透明的：
the clean crystal waters of the lake
清澈的湖水。
短语
crystal clear
1
- completely transparent and unclouded清澈的; 透亮的。
1.1
- unambiguous; easily understood清楚明白的; 易懂的：
the house rules are crystal clear.
住房条例清楚明白。
词源
late Old English (denoting ice or a mineral resembling it), from Old French cristal, from Latin crystallum, from Greek krustallos 'ice, crystal'. The chemistry sense dates from the early 17th cent.