\Met`an*ti*mon"ic\, a. [Pref. met- + antimonic.]
(Chem.)
(a) Pertaining to, or designating, an acid (formerly called
    {antimonic acid}) analogous to metaphosphoric acid, and
    obtained as a white amorphous insoluble substance,
    ({HSbO3}).
(b) Formerly, designating an acid, which is now properly
    called {pyroantimonic acid}, and analogous to
    pyrophosphoric acid.