Pronunciation: ˌ ə n- ˌ de-s ə - ' le-nik-, - ' l ē -
Function: noun
Etymology: undecylene (C 11 H 22 )
Date: 1879
: a fatty acid C 11 H 20 O 2 found in perspiration, obtained commercially from castor oil, and used especially in the treatment of fungal infections (as ringworm) of the skin