The word "Methylgag" is an uncommon term that is often used in chemistry. Its pronunciation can be explained using IPA phonetic transcription. The word is pronounced as "ˈmɛθəlɡæɡ", which means that the first syllable is stressed and the "g" sounds like the "g" in "go". The "a" sounds like the "a" in "bat", while the "ɛ" sounds like the "e" in "met". Overall, the spelling of "Methylgag" can be a bit tricky, but understanding its phonetic transcription can help in pronouncing it correctly.