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cerium Syllabification: ce·ri·um
Pronunciation: /ˈsirēəm/

Definition of cerium in English:


The chemical element of atomic number 58, a silvery white metal. It is the most abundant of the lanthanide elements and is the main component of the alloy misch metal. (Symbol: Ce)
Example sentences
  • Green light is also emitted from some lanthanide elements: lanthanum, cerium, and terbium.
  • Correlated systems include radioactive metals, such as plutonium, and compounds based on so-called rare earth elements and transition metals, such as cerium, ytterbium and copper.
  • That porous layer, which contains stabilized zirconia and small amounts of the metals ruthenium and cerium, chemically and cleanly converts the fuel to hydrogen.


Early 19th century: named after the asteroid Ceres, discovered shortly before.

Words that rhyme with cerium

imperium, magisterium
Definition of cerium in:
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