caesium
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/ˈsiːzi.əm/
English
Definitions
noun
- The chemical element (symbol Cs) with an atomic number of 55. It is a soft, gold-colored, highly reactive alkali metal.
Related words
Synonyms
cesiumcsatomic number 55antimonycalciumceriumcaesidecaesium auridecesium auridebariumsodiumcadmiumstrontiumeka-caesiummagnesiumcalifornium