The correct spelling of the word "Nitroglyn" is actually "Nitroglycerin." This word is spelled with an "i" in the third syllable, not a "y." In IPA phonetic transcription, this word would be pronounced as /ˌnaɪtrəʊˈɡlɪsərɪn/. The first syllable is pronounced with a long "i" sound and the "o" in the second syllable is pronounced with a schwa sound. The stress is on the third syllable, which is pronounced with a soft "g" sound and the ending is pronounced with an "in" sound.