Caison or Caisson: How To spell?

The word Caison 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."

--> Caisson has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings cai & on which should not be misspelled with single 'S'
Wrong Spelling:  cai-s-on 
Correct Spelling:  cai-ss-on 
Find more incorrect spellings of Caisson to spell right way.

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