Nitrosyl
Pronunciation : Ni*tro"syl
Part of Speech : n.
Etymology : [Nitroso- + -yl.] (Chem.)
Definition : Defn: the radical NO, called also the nitroso group. The term is sometimes loosely used to designate certain nitro compounds; as, nitrosyl sulphuric acid. Used also adjectively.
Source : Webster's Unabridged Dictionary, 1913