Of or pertaining to petroselinic acid or its derivatives.

(organic chemistry) Any salt or ester of petroselinic acid

plural of petroselinate

(organic chemistry) An unsaturated fatty acid cis-6-octadecenoic acid found in many members of the family Apiaceae (e.g. parsley seed oil); it is a positional isomer of oleic acid, the double bond being in position 6 instead of 9.