Definitions
1.nounThe univalent NO2 functional group.
2.nounNitroglycerin, especially as medication.
3.nounA beer that is nitrogenated to give it a more creamy head.
4.nounNitromethane.
5.nounNitrogen, especially as liquid nitrogen.
6.adjectiveContaining the nitro group; such compounds tend to be unstable and often explosive