Fosilization or Fossilization: How To spell?
The word Fosilization is misspelled against Fossilization, a noun meaning "The process of converting, or of being converted, into a fossil."
Fossilization has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings fo & ilization which should not be misspelled with single 'S'
Wrong Spelling:  fo-s-ilization  Correct Spelling:  fo-ss-ilization 
Find more incorrect spellings of Fossilization to spell right way.