Penetraol or Penetrail: How To spell?

The word Penetraol is misspelled against Penetrail, a noun meaning "Penetralia."

Word contains consecutive vowels 'AI' in between alphabets penetr & l is misspelled as 'AO'
Wrong Spelling:  penetr-ao-l 
Correct Spelling:  penetr-ai-l 
Find more incorrect spellings of Penetrail to spell right way.

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