Houstorium or Haustorium: How To spell?

The word Houstorium is misspelled against Haustorium, a noun meaning "One of the suckerlike rootlets of such plants as the dodder and ivy."

Word contains consecutive vowels 'AU' in between alphabets h & storium is misspelled as 'OU'
Wrong Spelling:  h-ou-storium 
Correct Spelling:  h-au-storium 
Check more misspelled words of Haustorium to spell it correct.

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