The spelling of the word "ethomorphine" can be explained through its pronunciation using the International Phonetic Alphabet (IPA). It is pronounced as /ɛθoʊˈmɔːrfin/, with the first syllable "etho" sounding like "eh-THO", the "morp" in the second syllable sounding like "MORP", and the "ine" at the end sounding like "EEN". This word is a synthetic opioid used for pain relief, and its correct spelling is important in medical contexts to avoid confusion and ensure accuracy in treatment.