\Di*ox"ide\ (?; 104), n. [Pref. di- + oxide.] (Chem.)
(a) An oxide containing two atoms of oxygen in each molecule;
    binoxide.
(b) An oxide containing but one atom or equivalent of oxygen
    to two of a metal; a suboxide. [Obs.]
{Carbon dioxide}. See {Carbonic acid}, under {Carbonic}.