Hypochlorous \Hy`po*chlo"rous\, a. [Pref. hypo- + chlorous.]
(Chem.)
Pertaining to, or derived from, chlorine having a valence
lower than in chlorous compounds.
[1913 Webster]
{Hypochlorous acid} (Chem.), an acid derived from chlorine,
not known in a pure state, but forming various salts,
called hypochlorites.
[1913 Webster]