niobic acid

1 definition found

niobic acid - Collaborative International Dictionary of English v.0.48 :

  Columbic \Co*lum"bic\, a. [From Columbium.] (Chem.)
     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.
        [1913 Webster]