Definition of undecylenic acid
: a fatty acid C11H20O2 found in perspiration, obtained commercially from castor oil, and used especially in the treatment of fungal infections (as ringworm) of the skin
Origin and Etymology of undecylenic acid
First Known Use: 1879
Seen and Heard
What made you want to look up undecylenic acid? Please tell us where you read or heard it (including the quote, if possible).