The word Fision is misspelled against Fission, meaning "splitting or division (esp. of cells)"
-->
Fission has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings fi & ion which should not be misspelled with single 'S'
Wrong Spelling: fi-s-ion
Correct Spelling: fi-ss-ion
Find more incorrect spellings of Fission to spell right way.