[ no-nok-suh-nawl-nahyn, -nol- ]
/ nɒˈnɒk səˌnɔlˈnaɪn, -ˌnɒl- /

noun Pharmacology.

the active ingredient of spermicides.

Origin of nonoxynol-9

by rearrangement of parts of its chemical name Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for nonoxynol-9


[ nŏn-ŏksə-nôl′-, -nōl′- ]


A spermicide that is widely used in contraceptive creams, foams, and lubricants.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.