The spelling of the word "merin" can be explained using the International Phonetic Alphabet (IPA). The first sound in "merin" is the "m" sound, pronounced /m/. The second sound is the "eh" sound, pronounced /ɛ/, followed by the "r" sound, pronounced /ɹ/. The last sound is the "in" sound, pronounced /ɪn/. Therefore, the correct IPA transcription for "merin" is /mɛɹɪn/. It is important to use correct phonetic transcriptions as it helps in proper pronunciation and understanding of the language.