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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.
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

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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  • Nitrogen-narcosis

    noun, Pathology. 1. a semistupor, lightheadedness, or euphoria experienced by deep-sea divers when nitrogen from air enters the blood at higher than atmospheric pressure. nitrogen narcosis n.

  • Nitrogenous

    [nahy-troj-uh-nuh s] /naɪˈtrɒdʒ ə nəs/ adjective 1. containing . /naɪˈtrɒdʒɪnəs/ adjective 1. containing nitrogen or a nitrogen compound: a nitrogenous fertilizer nitrogenous ni·trog·e·nous (nī-trŏj’ə-nəs) adj. Relating to or containing nitrogen. nitrogenous (nī-trŏj’ə-nəs) Containing nitrogen or a compound of nitrogen.

  • Nitrogenous wastes

    nitrogenous wastes [(neye-troj-uh-nuhs)] Animal wastes (particularly urine) that contain materials high in nitrogen content. Note: Nitrogenous waste can be valuable as fertilizer.

  • Nitrogen partition

    nitrogen partition n. The determination of the distribution of nitrogen in the urine among the various constituents. Also called nitrogen distribution.

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