The word "CLAUSUM" is spelled with a "C-L-A-U-S-U-M". The pronunciation of this word is /klausəm/. The "C" is pronounced as a hard "K" sound, followed by the "L" which is pronounced as /l/ sound. The "A" is pronounced as a short "UH" sound followed by the "U" pronounced as a long "OO" sound. The final "S-U-M" is pronounced as /səm/. Overall, the spelling of "CLAUSUM" is quite straightforward with a clear phonetic transcription.