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. of or containing niobium in the trivalent state Alsocolumbous

Word History and Origins

Origin of niobous¹

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