The term RESINLIKE SUBSTANCE can be summarized as a type of material that is similar to resin. It is a substance that is often used in the production of plastics, coatings, and adhesives. The crossword solution for this term is LAC, which stands for 'laccaic acid, ' a type of resin-like substance derived from certain types of insects. It is used in the production of varnishes, paints, and lacquers.