Retynal or Retainal: How To spell?

The word Retynal is misspelled against Retainal, a noun meaning "The act of retaining; retention."

Word contains consecutive vowels 'AI' in between alphabets ret & nal is misspelled as 'Y'
Wrong Spelling:  ret-y-nal 
Correct Spelling:  ret-ai-nal 
Explore spell check of Retainal to spell without errors.

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