nitrogen mustard: Meaning and Definition of

ni'trogen mus"tard

Pronunciation: [key]
— Chem. Chem.
  1. any of the class of poisonous, blistering compounds, as CHClN, analogous in composition to mustard gas but containing nitrogen instead of sulfur: used in the treatment of cancer and similar diseases; mechlorethamine.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.