The spelling of the word "Baryodyne" uses the IPA phonetic transcription to accurately represent its pronunciation. The first syllable "bar" is pronounced with a long "a" sound and a clear "r" consonant using the IPA symbol /bɑr/. The second syllable "yo" is pronounced with a diphthong, represented as /jaʊ/. Finally, the last syllable "dyne" is pronounced with a short "i" sound and a "dine" ending, represented as /daɪn/. Overall, the combination of these sounds creates the unique pronunciation and spelling of "Baryodyne".