The spelling of the word "arrhostia" is an interesting one. It is pronounced as "əˈroʊstiə" according to the IPA phonetic transcription. The first syllable "ar" is pronounced as "ər" with a short "a" sound. The second syllable "rho" is pronounced as "roʊ" with an "oh" sound. The third syllable "stia" is pronounced as "stiə" with a "stee-a" sound. This word is often spelled incorrectly as "arhostia" or "a hostia" due to its complex spelling.