The Collaborative International Dictionary of English v.0.48:

madia oil \madia oil\ n.
   The vegetable oil obtained from the Madia sativa. See
   Madia and madia oil plant.
   [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

melosa \melosa\ n.
   A South American herb (Madia sativa) with sticky glandular
   foliage; it is a source of madia oil.

   Syn: Chile tarweed, madia oil plant, Madia sativa.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

madia oil
    n 1: used as a substitute for olive oil