niobous

[ nahy-oh-buh s ]
/ naɪˈoʊ bəs /

adjective

Chemistry. containing trivalent niobium, as niobous chloride, NbCl3.
of or relating to niobium.

Origin of niobous

First recorded in 1860–65; niob(ium) + -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for niobous

niobous

/ (naɪˈəʊbəs) /

adjective

of or containing niobium in the trivalent stateAlso: columbous
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012