The word "exterioration" refers to the process of decay or deterioration of something that is exposed to the outdoors. This word is spelled with 5 syllables: ex-te-ri-o-ra-tion. The IPA phonetic transcription for this word is /ɛkstɪriəˈreɪʃən/. The first syllable starts with the "eks" sound, followed by "tih" and "ree". The fourth syllable is pronounced as "ohr", and the final syllable is pronounced as "ay-shun". Understanding the correct spelling and pronunciation of this word can help in effective communication.