palmitin
    n 1: an ester of glycerol and palmitic acid

Palmitin \Pal"mi*tin\, n. [So called because abundant in palm
   oil.] (Physiol. Chem.)
   A solid crystallizable fat, found abundantly in animals and
   in vegetables. It occurs mixed with stearin and olein in the
   fat of animal tissues, with olein and butyrin in butter, with
   olein in olive oil, etc. Chemically, it is a glyceride of
   palmitic acid, three molecules of palmitic acid being united
   to one molecule of glyceryl, and hence it is technically
   called tripalmitin, or glyceryl tripalmitate.
   [1913 Webster]