cerium: Meaning and Definition of

ce•ri•um

Pronunciation: (sēr'ē-um), [key]
— n.
  1. a steel-gray, ductile metallic element of the rare-earth group found only in combination. Symbol: Ce; at. wt.: 140.12; at. no.: 58.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
cerise cerium metal
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