The spelling of the word "DYNIN" can be explained using the International Phonetic Alphabet (IPA) transcription. The first syllable "DY" is pronounced as /daɪ/, with a long "i" sound. The second syllable "NIN" is pronounced as /nɪn/, with a short "i" sound. The spelling of "DY" with a "Y" instead of "I" indicates that this syllable has a "d" sound followed by a long "i" sound. Overall, the pronunciation of "DYNIN" is /ˈdaɪ.nɪn/.