from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, relating to, or containing cerium, especially with valence 3.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Containing cerium with valence three.

from The Century Dictionary and Cyclopedia

  • In chem., containing the metal cerium with apparent triad valence: as, cerous sulphate, cerous oxid, etc.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or relating to or containing cerium with valence 3


cer(ium) + -ous.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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