| oxygen | (noun) a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust | Synonyms: atomic number 8, O |
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| oxygenase | (noun) an oxidoreductase that catalyzes the incorporation of molecular oxygen | - |
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| oxygenate | (verb) impregnate, combine, or supply with oxygen | Synonyms: aerate, oxygenise, oxygenize |
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| oxygenation | (noun) the process of providing or combining or treating with oxygen | - |
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| oxygenise | (verb) impregnate, combine, or supply with oxygen | Synonyms: aerate, oxygenate, oxygenize |
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| (verb) dehydrogenate with oxygen | Synonyms: oxygenize |
| (verb) change (a compound) by increasing the proportion of the electronegative part; or change (an element or ion) from a lower to a higher positive valence: remove one or more electrons from (an atom, ion, or molecule) | Synonyms: oxygenize |
| oxygenize | (verb) impregnate, combine, or supply with oxygen | Synonyms: aerate, oxygenate, oxygenise |
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| (verb) dehydrogenate with oxygen | Synonyms: oxygenise |
| (verb) change (a compound) by increasing the proportion of the electronegative part; or change (an element or ion) from a lower to a higher positive valence: remove one or more electrons from (an atom, ion, or molecule) | Synonyms: oxygenise |