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cesium

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noun ce·si·um \ˈsē-zē-əm also -zhē-\

Definition of cesium

  1. :  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



Origin and Etymology of cesium

New Latin, from Latin caesius bluish gray


First Known Use: 1861


Medical Dictionary

cesium

noun ce·si·um

Medical Definition of cesium

  1. :  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

or chiefly British

caesium

\ˈsē-zē-əm\play

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