caesium

From Wiktionary
Wikipedia logo
Wikipedia logo
The Simple English Wikipedia has an article on:

xenon 55 barium

Other spellings[change]

Pronunciation[change]

Noun[change]

Singular
caesium

Plural
none

Caesium.
  1. (uncountable) Caesium is a chemical element that is a very soft silver-gold coloured alkali metal with the atomic number 55 and the symbol Cs.
    The atomic clock uses caesium to keep accurate time.