Cisson or Caisson: How To spell?
The word Cisson is misspelled against Caisson, a noun meaning "A chest filled with explosive materials, to be laid in the way of an enemy and exploded on his approach."
Word contains consecutive vowels 'AI' in between alphabets c & sson is misspelled as 'I'Wrong Spelling:  c-i-sson  Correct Spelling:  c-ai-sson 
Find more incorrect spellings of Caisson to spell right way.