Heterousian or Heteroousian: How To spell?
The word Heterousian is misspelled against Heteroousian, a noun meaning "One of those Arians who held that the Son was of a different substance from the Father."
Heteroousian has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings heter & usian which should not be misspelled with single 'O'
Wrong Spelling:  heter-o-usian  Correct Spelling:  heter-oo-usian 
Check more misspelled words of Heteroousian to spell it correct.