Disagregation or Disaggregation: How To spell?
The word Disagregation is misspelled against Disaggregation, a noun meaning "The separation of an aggregate body into its component parts."
Disaggregation has double "gg" is mispronounced as "g"Remember double 'GG' in between the strings disa & regation which should not be misspelled with single 'G'
Wrong Spelling:  disa-g-regation  Correct Spelling:  disa-gg-regation 
Find more incorrect spellings of Disaggregation to spell right way.