Syesmal or Seismal: How To spell?

The word Syesmal is misspelled against Seismal, an adjective meaning "pertaining to an earthquake; caused by an earthquake."

Word contains consecutive vowels 'EI' in between alphabets s & smal is misspelled as 'YE'
Wrong Spelling:  s-ye-smal 
Correct Spelling:  s-ei-smal 
Explore spell check of Seismal to spell without errors.