Ilumination or Illumination: How To spell?
The word Ilumination is misspelled against Illumination, a noun meaning "Adornment of books and manuscripts with colored illustrations. See Illuminate, v. t., 3."
Illumination has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings i & umination which should not be misspelled with single 'L'
Wrong Spelling:  i-l-umination  Correct Spelling:  i-ll-umination 
Check more misspelled words of Illumination to spell it correct.