Periostaul or Periosteal: How To spell?
The word Periostaul is misspelled against Periosteal, an adjective meaning "Situated around bone; of or pertaining to the periosteum."
Periosteal has vowels 'ea' together mispronounced as 'au'Word contains consecutive vowels 'EA' in between alphabets periost & l is misspelled as 'AU'
Wrong Spelling:  periost-au-l  Correct Spelling:  periost-ea-l 
Check more misspelled words of Periosteal to spell it correct.