Muhamadanism or Muhammadanism: How To spell?
The word Muhamadanism is misspelled against Muhammadanism, a noun meaning "Mohammedanism."
Muhammadanism has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings muha & adanism which should not be misspelled with single 'M'
Wrong Spelling:  muha-m-adanism  Correct Spelling:  muha-mm-adanism 
Check more misspelled words of Muhammadanism to spell it correct.