Penetrul or Penetrail: How To spell?

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

Word contains consecutive vowels 'AI' in between alphabets penetr & l is misspelled as 'U'
Wrong Spelling:  penetr-u-l 
Correct Spelling:  penetr-ai-l 
Check more misspelled words of Penetrail to spell it correct.

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