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Webster 1913 Edition

Cerium

Ce′ri-um

,
Noun.
[Named by Berzelius in 1803 from the asteroid
Ceres
, then just discovered (1801).]
(Chem.)
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.

Webster 1828 Edition

Cerium

CERIUM

,
Noun.
A metal recently discovered in Sweden, in the mineral cerate, and so called rom the planet Ceres. It is of great specific gravity. Its color a grayish white and its texture lamellar.

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