Tritheusm or Tritheism: How To spell?

The word Tritheusm is misspelled against Tritheism, a noun meaning "The opinion or doctrine that the Father, Son, and Holy Spirit are three distinct Gods."

Word contains consecutive vowels 'EI' in between alphabets trith & sm is misspelled as 'EU'
Wrong Spelling:  trith-eu-sm 
Correct Spelling:  trith-ei-sm 
Check more misspelled words of Tritheism to spell it correct.