Retanal or Retainal: How To spell?
The word Retanal 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 'A'Wrong Spelling:  ret-a-nal  Correct Spelling:  ret-ai-nal 
Explore spell check of Retainal to spell without errors.