Subperiostal or Subperiosteal: How To spell?

The word Subperiostal is misspelled against Subperiosteal, an adjective meaning "Situated under the periosteum."

--> Subperiosteal has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets subperiost & l is misspelled as 'A'
Wrong Spelling:  subperiost-a-l 
Correct Spelling:  subperiost-ea-l 
Check more misspelled words of Subperiosteal to spell it correct.

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