hyponitrous

POS

Adjective

HYPHEN

hy=po=ni=trous

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CIDE DICTIONARY

hyponitrous, a. [Pref. hypo- + nitrous.].

Containing or derived from nitrogen having a lower valence than in nitrous compounds. [1913 Webster]

Hyponitrous acid (Chem.), an unstable nitrogen acid, NOH, whose salts are produced by reduction of the nitrates, although the acid itself is not isolated in the free state except as a solution in water; -- called also nitrosylic acid.