The word "Nipruton" is spelled phonetically as /nɪpɹutɑn/. According to the International Phonetic Alphabet (IPA), the first syllable "nip" is pronounced as /nɪp/. The second syllable "ru" is pronounced as /ɹu/. The third syllable "ton" is pronounced as /tɑn/. The consonant cluster "pr" in the middle is pronounced as /pɹ/. Thus, the correct pronunciation of "Nipruton" is "nip-roo-ton". Understanding IPA is important for proper pronunciation and clear communication.