Definitions

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

  • n. A compound having five atoms of oxygen combined with another element or radical.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. any oxide containing five oxygen atoms in each molecule

from the GNU version of the Collaborative International Dictionary of English

  • n. An oxide containing five atoms of oxygen in each molecule.

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

  • n. an oxide containing five atoms of oxygen in the molecule

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