The correct spelling of the word "most tornado" includes the silent "r" before the "n" sound. The International Phonetic Alphabet (IPA) phonetic transcription for the pronunciation of this word is /moʊst tɔːrˈneɪdoʊ/. This means that the first syllable is pronounced with the "oh" sound (/moʊst/), the second syllable has a long "o" sound (/tɔːr/), and the final syllable has the "nay" sound, followed by "doh" (/neɪdoʊ/). It is important to use correct spelling and pronunciation when communicating, especially with technical or scientific subjects such as tornadoes.