Milennium or Millennium: How To spell?

The word Milennium is misspelled against Millennium, a noun meaning "A thousand years; especially, the thousand years mentioned in the twentieth chapter in the twentieth chapter of Revelation, during which holiness is to be triumphant throughout the world. Some believe that, during this period, Christ will reign on earth in person with his saints."

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