Columbic

Adjective

co=lum=bic

CIDE DICTIONARY

Columbic, a. [From Columbium.].

Pertaining to, or containing, columbium or niobium; niobic. [1913 Webster]

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

Columbic, a. [From Columbo.].

Pertaining to, or derived from, the columbo root. [1913 Webster]

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