from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An oxide with each molecule containing one oxygen atom.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. any oxide containing a single oxygen atom in each molecule or formula unit

from the GNU version of the Collaborative International Dictionary of English

  • n. An oxide containing one atom of oxygen in each molecule.

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

  • n. an oxide containing just one atom of oxygen in the molecule


Formed as mon- +‎ oxide; compare the earlier dioxide, pentoxide, and tetroxide. (Wiktionary)



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