Cerium
Cerium Ce"ri*um, n. [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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • cérium — [ serjɔm ] n. m. • 1803; de Cérès ♦ Chim. Élément chimique (Ce; no at. 58; m. at. 140,1), métal du groupe des lanthanides. Oxyde de cérium. ● cérium nom masculin (de Cérès, nom propre) Métal du groupe des lanthanides. (Élément chimique de symbole …   Encyclopédie Universelle

  • Cerium — Cérium Cérium Lanthane ← …   Wikipédia en Français

  • Cérium — Lanthane ← Cérium → Praséodyme …   Wikipédia en Français

  • cerium — ► NOUN ▪ a silvery white metallic chemical element, the most abundant of the lanthanide series. ORIGIN named after the asteroid Ceres, discovered in 1801, shortly before cerium was identified …   English terms dictionary

  • Cerĭum — (eigentlich Cererium, Chem.), 1) C. zuerst von Vauquelin, dann von Mosander, Klapproth, Berzelius etc. entdecktes Metall. Es findet sich, wiewohl selten, im Verein mit den beiden Metallen Lanthan u. Didym (s.d.) als Oxyd u. Oxydul im Cerit,… …   Pierer's Universal-Lexikon

  • Cerĭum — Cerĭum, s. Cer …   Meyers Großes Konversations-Lexikon

  • Cerium — Cerĭum, Metall, s. Cer …   Kleines Konversations-Lexikon

  • Cerium — Cerium, ein Erdmetall, welches sich als Oxydul in mehreren seltenen Mineralien, wie im Cerit, Allanit, Orphit u.s.w. findet, und durch Zersetzung des Chlorceriums mit Kalium als ein graues, metallglänzendes Pulver erhalten wird …   Herders Conversations-Lexikon

  • cerium — Symbol: Ce Atomic number: 58 Atomic weight: 140.12 Silvery metallic element, belongs to the lanthanoids. Four natural isotopes exist, and fifteen radioactive isotopes have been identified. Used in some rare earth alloys. The oxidized form is used …   Elements of periodic system

  • cerium — element, first isolated in pure form in 1875, named for ceria, name of the earth from which it was taken, which was discovered in 1803 and named for Ceres, the minor planet, which had been discovered in 1801 and named for the Roman goddess CERES… …   Etymology dictionary

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