Semicentenial or Semicentennial: How To spell?

The word Semicentenial is misspelled against Semicentennial, a noun meaning "A fiftieth anniversary."

Semicentennial has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings semicente & ial which should not be misspelled with single 'N'
Wrong Spelling:  semicente-n-ial 
Correct Spelling:  semicente-nn-ial 
Find more wrongly spelled words of Semicentennial to spell it well.

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