nitroglycerinePronunciation: /ˌnʌɪtrə(ʊ)ˈglɪs(ə)riːn, -ɪn/ (US also nitroglycerin)Definition of nitroglycerine noun [mass noun] an explosive yellow liquid made by nitrating glycerol, used in explosives such as dynamite. Alternative name: glyceryl trinitrate; chemical formula: CH2(NO3)CH(NO3)CH2(NO3) nitroglycerine in other Oxford dictionaries Definition of nitroglycerine in the US English dictionary