First Known Use: 1861
Dictionary
cesium
noun ce·si·um \ˈsē-zē-əm also -zhē-\
Definition of CESIUM
: a silver-white soft ductile element of the alkali metal group that is the most electropositive element known and that is used especially in photoelectric cells — see element table
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Origin of CESIUM
New Latin, from Latin caesius bluish gray
Medical Dictionary
cesium
noun ce·si·um
Medical Definition of CESIUM
: a silver-white soft ductile element of the alkali metal group that is the most electropositive element known and that is used especially in photoelectric cells—symbol Cs; see element table
Variants of CESIUM
ce·si·um or chiefly British cae·si·um \ˈsē-zē-əm\
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