Dictionary

nonoxynol–9

noun no·nox·y·nol–9 \nä-ˈnäk-si-ˌnl-ˈnīn, nə-, -ˌnōl-\

Definition of NONOXYNOL-9

:  a spermicide used in contraceptive products

Origin of NONOXYNOL-9

nonyl (the radical C9H19) + oxy- + phenol + 9 (from the fact that the compounds it contains have an average of nine ethylene oxide groups per molecule)
First Known Use: 1980

nonoxynol–9

noun no·nox·y·nol–9 \nä-ˈnäk-sə-ˌnōl-ˈnīn, -ˌnl-\   (Medical Dictionary)

Medical Definition of NONOXYNOL–9

:  a spermicide used in contraceptive products that consists of a mixture of compounds having the general formula C15H23(OCH2CH2)nOH with an average of nine ethylene oxide groups per molecule

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