Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun atomic_number_55

1 sense of atomic number 55

Sense 1
cesium, caesium, Cs, atomic number 55 -- (a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal)
       => metallic element, metal -- (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)