The Collaborative International Dictionary
Niobate
Niobate \Ni"o*bate\, n. [See Niobium.] (Chem.) Same as Columbate.
Wiktionary
niobate
n. 1 (context chemistry English) Any salt, XNbO3 of the weak niobic acid. 2 (context chemistry English) The univalent anion NbO3-.
Wikipedia
Usage examples of "niobate".
Other crystals experimented with are rochelle salts, potassium niobate, and potassium dihydrogen phosphate.