Hesian or Hessian: How To spell?
The word Hesian is misspelled against Hessian, a noun meaning "A mercenary or venal person."
Hessian has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings he & ian which should not be misspelled with single 'S'
Wrong Spelling:  he-s-ian  Correct Spelling:  he-ss-ian 
Find more wrongly spelled words of Hessian to spell it well.