| cesium | (n) a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal, Syn. Cs, caesium, atomic number 55 |
| 铯 | [铯 / 銫] cesium Cs, alkali metal 鹼性金屬|碱性金属 with atomic number 55, See also: 鹼性金屬, 碱性金属 #64,174 [Add to Longdo] |