Sesmal or Seismal: How To spell?

The word Sesmal 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 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  s-e-smal 
Correct Spelling:  s-ei-smal 
Explore spell check of Seismal to spell without errors.