Found 2 items, similar to nitro group.
English → English (WordNet) Definition: nitro group nitro group n : the group -NO3
English → English (gcide) Definition: nitro group Nitroxyl \Ni*trox"yl\, n. [Nitro- + oxygen + -yl.] (Chem.) The group -NO2, usually called the nitro group. [1913 Webster]