Pronunciation: ˌ r ī -s ə -n ō - ' l ē -ik-, ˌ ri-, - ' l ā -
Function: noun
Etymology: Latin ricin us + English oleic acid
Date: 1848
: an oily unsaturated hydroxy fatty acid C 18 H 34 O 3 that occurs in castor oil as a glyceride and yields esters important as plasticizers