Cystideyn or Cystidean: How To spell?
The word Cystideyn is misspelled against Cystidean, a noun meaning "One of the Cystidea."
Cystidean has vowels 'ea' together mispronounced as 'ey'Word contains consecutive vowels 'EA' in between alphabets cystid & n is misspelled as 'EY'
Wrong Spelling:  cystid-ey-n  Correct Spelling:  cystid-ea-n 
Find more wrongly spelled words of Cystidean to spell it well.