Definition of nitrous
informal
: nitrous oxide He began huffing nitrous by the case, causing vivid hallucinations. — David Peisner
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1977
First Known Use of nitrous
1977
2
nitrous
adjective
ni·trous
Definition of nitrous
archaic
: of, relating to, or containing niter
Origin and Etymology of nitrous
New Latin nitrosus, from Latin, full of natron, from nitrum natron — more at niter
First Known Use: 1583
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