dioxide Meaning, Definition & Usage

  1. noun an oxide containing two atoms of oxygen in the molecule

WordNet

Di*ox"ide noun
Etymology
Pref. di- + oxide.
Definitions
  1. (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.

Webster 1913