Chem.
a colorless, oily, slightly water-soluble liquid, C 4 H 10 S, having a garliclike odor: used chiefly as a solvent for certain salts and in organic synthesis. Also called ethylthioether /eth'euhl thuy'oh ee"theuhr/ , ethylthioethane /eth'euhl thuy'oh eth"ayn/ .