The spelling of the word "kinnison" can be explained using IPA phonetic transcription. The first syllable "kin" is pronounced as /kɪn/, where the "i" is a short vowel. The second syllable "ni" is pronounced as /nɪ/ with a short "i" sound as well. Finally, the last syllable "son" is pronounced as /sən/ with a short "o" sound. Thus, "kinnison" is spelled as /ˈkɪn.nɪ.sən/. It is important to use accurate spellings of words to ensure clear communication and understanding.