- the active ingredient of spermicides.
Origin of nonoxynol-9
by rearrangement of parts of its chemical name
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- 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.