a colorless liquid, (CH)SO, that diffuses very rapidly through the skin: used as a solvent and experimentally in medicine
Origin:
d(i)m(ethyl) s(ulf)o(xide)
See DMSO in American Heritage Dictionary 4
noun
A colorless hygroscopic liquid, (CH3)2SO, obtained from lignin, used as an industrial solvent and in medicine as a penetrant to convey medications into the tissues.