Cheropterygium or Cheiropterygium: How To spell?

The word Cheropterygium is misspelled against Cheiropterygium, a noun meaning "The typical pentadactyloid limb of the higher vertebrates."

Word contains consecutive vowels 'EI' in between alphabets ch & ropterygium is misspelled as 'E' as letter 'I' is phonetically
Wrong Spelling:  ch-e-ropterygium 
Correct Spelling:  ch-ei-ropterygium 
Check more misspelled words of Cheiropterygium to spell it correct.