Difusive or Diffusive: How To spell?
The word Difusive is misspelled against Diffusive, an adjective meaning "Having the quality of diffusing; capable of spreading every way by flowing; spreading widely; widely reaching; copious; diffuse."
Diffusive has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Di & usive which should not be misspelled with single 'F'
Wrong Spelling:  Di-f-usive  Correct Spelling:  Di-ff-usive 
Check more misspelled words of Diffusive to spell it correct.