|  Cs 
 
 a soft silver-white ductile metallic element (liquid at normal temperatures);
 the most electropositive and alkaline metal
 • Syn:
 cesium, caesium, atomic number 55
 • Hypernyms:
 metallic element, metal
 • Hyponyms:
 cesium 137
 • Substance Holonyms:
 pollucite
 
 
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