The word "Closson" is a surname that is pronounced as "klɑsən". The first syllable "clos" is pronounced as "klɑs" with a long "a" sound. The second syllable "-son" is pronounced as "sən". The spelling of the word is the standardized form of the original German name "Klausen". The spelling of the name changed as it was anglicized over time. While it may be difficult to determine the spelling of the word based on pronunciation alone, the IPA transcription provides clarity on pronunciation.