Bicentenial or Bicentennial: How To spell?
The word Bicentenial is misspelled against Bicentennial, a noun meaning "The two hundredth year or anniversary, or its celebration."
Bicentennial has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings bicente & ial which should not be misspelled with single 'N'
Wrong Spelling:  bicente-n-ial  Correct Spelling:  bicente-nn-ial 
Find more wrongly spelled words of Bicentennial to spell it well.