cesium

2 definitions found

cesium - Collaborative International Dictionary of English v.0.48 :

  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]

cesium - WordNet (r) 2.1 (2005) :

  cesium
      n 1: a soft silver-white ductile metallic element (liquid at
           normal temperatures); the most electropositive and alkaline
           metal [syn: cesium, caesium, Cs, atomic number 55]