Cystoideun or Cystoidean: How To spell?

The word Cystoideun is misspelled against Cystoidean, a noun meaning "Same as Cystidean."

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

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