niobous

[nahy-oh-buhs]

adjective

1. Chemistry.,  containing trivalent niobium, as niobous chloride, NbCl 3 .

2. of or relating to niobium.

niobous

/ naɪˈəʊbəs /

adjective

1. Also: columbous. of or containing niobium in the trivalent state

Word History and Origins

Origin of niobous¹

First recorded in 1860–65; niob(ium) + -ous