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[hahy-puh-nahy-truh s]
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  1. of or derived from hyponitrous acid.

Origin of hyponitrous

First recorded in 1820–30; hypo- + nitrous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for hyponitrous

Historical Examples

  • The hyponitrous and nitrous are two acids remarkable for containing no water in their composition; being therefore dry liquids.

    A Dictionary of Arts, Manufactures and Mines

    Andrew Ure

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