Idolon or Eidolon: How To spell?

The word Idolon is misspelled against Eidolon, a noun meaning "An image or representation; a form; a phantom; an apparition."

Word begins with consecutive vowels 'EI' followed by alphabets 'dolon' is misspelled as 'I' as letter 'E' is phonetically ignore
Wrong Spelling:  i-dolon 
Correct Spelling:  ei-dolon 
Find more incorrect spellings of Eidolon to spell right way.