pentoxide

Noun

WordNet 3.0

Noun (1)

  1. an oxide containing five atoms of oxygen in the molecule
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Webster's Dictionary (GCIDE)

Pentoxide \Pen*tox"ide\, n. [Penta- + oxide.] (Chem.) An oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide, P2O5. [1913 Webster]
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