Penetreal or Penetrail: How To spell?

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

Word contains consecutive vowels 'AI' in between alphabets penetr & l is misspelled as 'EA'
Wrong Spelling:  penetr-ea-l 
Correct Spelling:  penetr-ai-l 
Explore spell check of Penetrail to spell without errors.

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