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atomic number 55

 
Noun atomic number 55 has 1 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
    --1 is a kind of metallic element, metal
    --1 is a substance of pollucite
    --1 has particulars: cesium 137
atomic number 47 atomic number 48 atomic number 49 atomic number 50 atomic number 51 atomic number 52 atomic number 53 atomic number 54 atomic number 55 atomic number 56 atomic number 57 atomic number 58 atomic number 59 atomic number 60 atomic number 61 atomic number 62 atomic number 63

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