nitrosamines

/N IH0 T R AA0 S AH0 M IY1 N Z/
noun
  1. 1

    A divalent functional group, >N.N=O.

  2. 2

    Any of a class of carcinogenic organic compounds containing this group, prepared by the reaction of amines with nitrites.

Source: https://en.wiktionary.org/wiki/nitrosamine, https://en.wiktionary.org/wiki/nitrosamines