The word Demision is misspelled against Demission, a noun meaning "Resignation of an office."
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Demission has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings demi & ion which should not be misspelled with single 'S'
Wrong Spelling:  demi-s-ion 
Correct Spelling:  demi-ss-ion 
Find more incorrect spellings of Demission to spell right way.