olein
    n 1: a naturally occurring glyceride of oleic acid that is found
         in fats and oils [syn: triolein, olein]

Olein \O"le*in\ ([=o]"l[-e]*[i^]n), n. [L. oleum oil: cf. F.
   ol['e]ine.] (Physiol. Chem.)
   A fat, liquid at ordinary temperatures, but solidifying at
   temperatures below 0[deg] C., found abundantly in both the
   animal and vegetable kingdoms (see Palmitin). It dissolves
   solid fats, especially at 30-40[deg] C. Chemically, olein is
   a glyceride of oleic acid; and, as three molecules of the
   acid are united to one molecule of glycerol to form the fat,
   it is technically known as triolein. It is also called
   elain.
   [1913 Webster]