Cerium
Pronunciation : Ce"ri*um
Part of Speech : n.
Etymology : [Named dy Berzelius in 1803 from the asteroid Ceres, then just discovered (1801).] (Chem.)
Definition : Defn: A rare metallic element, occurring in the minerals cerite, allanite, monazite, etc. Symbol Ce. Atomic weight 141.5. It resembles iron in color and luster, but is soft, and both malleable and ductile. It tarnishes readily in the air.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder