Tavtozonal or Tautozonal: How To spell?

The word Tavtozonal is misspelled against Tautozonal, an adjective meaning "Belonging to the same zone; as, tautozonal planes."

Word contains consecutive vowels 'AU' in between alphabets t & tozonal is misspelled as 'AV'
Wrong Spelling:  t-av-tozonal 
Correct Spelling:  t-au-tozonal 
Find more incorrect spellings of Tautozonal to spell right way.

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