The word "Acestrum" is pronounced /əˈsɛstrəm/. The first syllable is unstressed and is pronounced with a schwa sound, while the second syllable is stressed and contains the "e" sound as in "bed". The "s" and "t" in the middle of the word are pronounced separately, with a slight pause between them. The final syllable is pronounced like "rum" as in the alcoholic drink. Overall, the spelling of "Acestrum" accurately represents its pronunciation in IPA phonetic transcription.