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.