Demicanon or Demicannon: How To spell?

The word Demicanon is misspelled against Demicannon, a noun meaning "A kind of ordnance, carrying a ball weighing from thirty to thirty-six pounds."

Demicannon has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings demica & on which should not be misspelled with single 'N'
Wrong Spelling:  demica-n-on 
Correct Spelling:  demica-nn-on 
Find more incorrect spellings of Demicannon to spell right way.

You might be interested to know

Enobler or Ennobler?

Greeness or Greenness?

Inervate or Innervate?