Stouroscope or Stauroscope: How To spell?

The word Stouroscope is misspelled against Stauroscope, a noun meaning "An optical instrument used in determining the position of the planes of light-vibration in sections of crystals."

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

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