non·ox·y·nol-9 
(nŏn-ŏksə-nôl′nīn, -nŏl′-, -nōl′-)
(nŏn-ŏksə-nôl′nīn, -nŏl′-, -nōl′-)n.
A spermicide widely used in contraceptive creams, foams, and lubricants.
[non(ane), alkane having nine carbons (from Latin nōnus, ninth; see NOON) + (ETH)OXY + (ETHA)NOL + 9 (from from its chain of nine ethoxy groups).]