Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A compound with two oxygen atoms per molecule.

from the GNU version of the Collaborative International Dictionary of English.

  • noun obsolete, obsolete An oxide containing two atoms of oxygen in each molecule; binoxide.
  • noun obsolete An oxide containing but one atom or equivalent of oxygen to two of a metal; a suboxide.
  • noun See Carbonic acid, under Carbonic.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chemistry Any oxide containing two oxygen atoms in each molecule.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an oxide containing two atoms of oxygen in the molecule

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From di- +‎ oxide.

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