nitrogen mustard

noun Chemistry.
any of the class of poisonous, blistering compounds, as C 5 H 1 1 Cl 2 N, analogous in composition to mustard gas but containing nitrogen instead of sulfur: used in the treatment of cancer and similar diseases; mechlorethamine.

Origin:
1945–50

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World English Dictionary
nitrogen mustard
 
n
any of a class of organic compounds resembling mustard gas in their molecular structure. General formula: RN(CH2CH2Cl)2, where R is an organic group: important in the treatment of cancer

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American Heritage
Medical Dictionary

nitrogen mustard n.
Any of various toxic blistering compounds analogous to mustard gas but containing nitrogen rather than sulfur, sometimes used to control or check the growth of neoplastic cells.

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