Decusation or Decussation: How To spell?
The word Decusation is misspelled against Decussation, a noun meaning "Act of crossing at an acute angle, or state of being thus crossed; an intersection in the form of an X; as, the decussation of lines, nerves, etc."
Decussation has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings decu & ation which should not be misspelled with single 'S'
Wrong Spelling:  decu-s-ation  Correct Spelling:  decu-ss-ation 
Check more misspelled words of Decussation to spell it correct.