Disertational or Dissertational: How To spell?
The word Disertational is misspelled against Dissertational, an adjective meaning "Relating to dissertations; resembling a dissertation."
Dissertational has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings di & ertational which should not be misspelled with single 'S'
Wrong Spelling:  di-s-ertational  Correct Spelling:  di-ss-ertational 
Find more incorrect spellings of Dissertational to spell right way.