"Arsenian" is spelled as /ɑːˈsiniən/ in the International Phonetic Alphabet. The word refers to a compound containing arsenic. The first syllable "ar-" is pronounced with a long "a" sound as in "car". The second syllable "-se-" has a short "e" sound, as in "set". The "-ni-" is pronounced with a long "i" sound, as in "knee". The final syllable "-an" is pronounced with a short "a" sound, as in "pan". Together, the word is spelled "arsenian" and pronounced /ɑːˈsiniən/.