any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘caesium'.
Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors.
Send us feedback
Look up caesium for the last time
Close your vocabulary gaps with personalized learning that focuses on teaching the
words you need to know.