Cupelation or Cupellation: How To spell?

The word Cupelation is misspelled against Cupellation, a noun meaning "The act or process of refining gold or silver, etc., in a cupel."

Cupellation has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings cupe & ation which should not be misspelled with single 'L'
Wrong Spelling:  cupe-l-ation 
Correct Spelling:  cupe-ll-ation 
Check more misspelled words of Cupellation to spell it correct.