Musulmanism or Mussulmanism: How To spell?
The word Musulmanism is misspelled against Mussulmanism, a noun meaning "Mohammedanism."
Mussulmanism has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings mu & ulmanism which should not be misspelled with single 'S'
Wrong Spelling:  mu-s-ulmanism  Correct Spelling:  mu-ss-ulmanism 
Check more misspelled words of Mussulmanism to spell it correct.