The word "ostrom" is not a commonly used word but can be spelled with the IPA phonetic transcription as /ˈɑstrəm/. The first syllable "os" is pronounced as "ahs" while the second syllable "trom" is pronounced as "truhm". The "o" in "os" is pronounced as a long "a" sound while the "r" in "trom" is pronounced with a slight roll. This spelling emphasizes the correct pronunciation of the word and avoids confusion with other words that may have similar spellings or pronunciations.