Dioxide :: Dioxide (n.) An oxide containing two atoms of oxygen in each molecule; binoxide.
Dioxide :: Dioxide (n.) An oxide containing but one atom or equivalent of oxygen to two of a metal; a suboxide.
Dioxindol :: Dioxindol (n.) A white, crystalline, nitrogenous substance obtained by the reduction of isatin. It is a member of the indol series; -- hence its name..