The spelling of the word "Melchiah" can be explained using IPA phonetic transcription. The first syllable is pronounced as /mɛl/, with the 'e' being pronounced as a schwa. The second syllable is pronounced as /kaɪə/, with the '-iah' being pronounced as a single syllable. The 'ch' is pronounced as /k/ rather than /tʃ/. Overall, the IPA transcription for "Melchiah" is /ˈmɛlkəja/. By understanding the IPA transcription, one can accurately spell and pronounce this word.