Dictionary
ni'trogen mus"tard
Chem.
any of the class of poisonous, blistering compounds, as C
5H
11Cl
2N, 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.