dimethyl sulfate: Meaning and Definition of

dimeth'yl sul'fate

Pronunciation: [key]
— Chem. Chem.
  1. a colorless or yellow, slightly water-soluble, poisonous liquid, (CH)SO, used chiefly in organic synthesis.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.