What is "columbic acid"

Columbic \Co*lum"bic\, a. [From Columbium.] (Chem.) Pertaining to, or containing, columbium or niobium; niobic.

Columbic acid (Chem.), a weak acid derived from columbic or niobic oxide, Nb2O5; -- called also niobic acid.

Columbic \Co*lum"bic\, a. [From Columbo.] Pertaining to, or derived from, the columbo root.

Columbic acid (Chem.), an organic acid extracted from the columbo root as a bitter, yellow, amorphous substance.

n. (context organic compound English) An acid extracted from the columbo root as a bitter, yellow, amorphous substance.