The Collaborative International Dictionary of English v.0.48:

Teracrylic \Ter`a*cryl"ic\, a. [Terpene + acrylic.] (Chem.)
   Of, pertaining to, or designating, an acid of the acrylic
   series, obtained by the distillation of terpenylic acid, as
   an only substance having a peculiar cheesy odor.
   [1913 Webster]