Catacuastic or Catacaustic: How To spell?

The word Catacuastic is misspelled against Catacaustic, a noun meaning "A caustic curve formed by reflection of light."

Word contains consecutive vowels 'AU' in between alphabets catac & stic is misspelled as 'UA'
Wrong Spelling:  catac-ua-stic 
Correct Spelling:  catac-au-stic 
Check more misspelled words of Catacaustic to spell it correct.

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