The word Difusibleness is misspelled against Diffusibleness, a noun meaning "Diffusibility."
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Diffusibleness has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Di & usibleness which should not be misspelled with single 'F'
Wrong Spelling:  Di-f-usibleness 
Correct Spelling:  Di-ff-usibleness 
Check more misspelled words of Diffusibleness to spell it correct.