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.
© Webster 1913.
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.
© Webster 1913.