Found 2 items, similar to cesium.
English → English (WordNet) Definition: cesium cesium n : a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal [syn: caesium, Cs, atomic number 55]
English → English (gcide) Definition: cesium cesium \cesium\ n. the chemical element of atomic number 55. It is a univalent element, the most electropositive metal. Symbol Cs; atomic weight 132.905. IT has a melting point of 28.4[deg] C. Syn: caesium, Cs. [WordNet 1.5]