Cystideun or Cystidean: How To spell?

The word Cystideun is misspelled against Cystidean, a noun meaning "One of the Cystidea."

Cystidean has vowels 'ea' together mispronounced as 'eu'
Word contains consecutive vowels 'EA' in between alphabets cystid & n is misspelled as 'EU'
Wrong Spelling:  cystid-eu-n 
Correct Spelling:  cystid-ea-n 
Check more misspelled words of Cystidean to spell it correct.

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