nitrogen peroxide
noun
Nitrogen dioxide and nitrogen tetroxide, considered as a single substance in two forms.
Origin
Late 19th century.
- unproductive
- unproductively
- unproductiveness
- unproductivity
- unprofanable
- unprofane
- unprofaned
- unprofessed
- unprofessional
- unprofessionalism
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- unprofitably
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- unprofound
- unprogrammable
- unprogrammed
- unprogressive
- unprogressively