"Triaxon" is a rare word that refers to a type of chemical compound. Its spelling can be explained using the International Phonetic Alphabet (IPA). The word begins with the consonant cluster "tr," which is pronounced as /tr/. The following vowel is "i," pronounced as /ɪ/. Then, there is the letter "a," which is pronounced as /ə/. Finally, the word ends with the consonant cluster "xon," which is pronounced as /ksɑn/. So, the correct spelling is "triaxon" /ˈtraɪəksɑn/.