cerous


ce·rous

C0213300 (sîr′əs)adj. Relating to or containing cerium, especially with valence 3.
[cer(ium) + -ous.]

cerous

(ˈsɪərəs) adj (Elements & Compounds) of or containing cerium in the trivalent state[C19: from cerium + -ous]

ce•rous

(ˈsɪər əs)

adj. containing trivalent cerium. [1860–65]
Thesaurus
Adj.1.cerous - of or relating to or containing cerium with valence 3