Cantharidin(redirected from cantharis camphor)
Also found in: Dictionary, Medical.
the active principle of Spanish flies and other bugs of the family Meloidae (blister beetles); a terpenoid anhydride of cantharidic acid. Cantharidin is poorly soluble in water and readily soluble in fats and organic solvents. It severely blisters the skin and mucous membranes. It causes pain, a burning sensation, and formation of blisters. Ingestion causes poisoning, accompanied by catarrh of the urinary tract, salivation, vomiting, diarrhea, abdominal pain, and excitation of the central nervous system.