Ceravnoscope or Ceraunoscope: How To spell?

The word Ceravnoscope is misspelled against Ceraunoscope, a noun meaning "An instrument or apparatus employed in the ancient mysteries to imitate thunder and lightning."

Word contains consecutive vowels 'AU' in between alphabets cer & noscope is misspelled as 'AV'
Wrong Spelling:  cer-av-noscope 
Correct Spelling:  cer-au-noscope 
Find more incorrect spellings of Ceraunoscope to spell right way.

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