Acessional or Accessional: How To spell?
The word Acessional is misspelled against Accessional, an adjective meaning "Pertaining to accession; additional."
Accessional has double "cc" is mispronounced as "c"Remember double 'CC' in between the strings A & essional which should not be misspelled with single 'C'
Wrong Spelling:  A-c-essional  Correct Spelling:  A-cc-essional 
Find more incorrect spellings of Accessional to spell right way.