The word Propylaua is misspelled against Propylaea, which is plural of "Propylaeum"
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Propylaea has vowels 'ae' together mispronounced as 'au'
Word contains consecutive vowels 'AE' in between alphabets propyl & a is misspelled as 'AU'
Wrong Spelling:  propyl-au-a 
Correct Spelling:  propyl-ae-a 
Check more misspelled words of Propylaea to spell it correct.