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English to English noun
| 1 |
a metallic oxide containing the univalent anion O2- |  | source: wordnet30
| 2 |
the univalent anion O2- | | Example: much of the O2 supporting cellular respiration is reduced to the superoxide anion O2-
source: wordnet30
| 3 |
See Peroxide. | | source: webster1913
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