|meth+- noun
Etymology: International Scientific Vocabulary meth- + acrylic
: an unsaturated liquid or crystalline acid CH 2 . C(CH 3 )COOH that is isomeric with crotonic acid, that occurs in Roman chamomile oil but is usually obtained by reaction of acetone cyanohydrin and sulfuric acid, and that resembles acrylic acid in ease of polymerization; α-methyl-acrylic acid