Coudex or Caudex: How To spell?

The word Coudex is misspelled against Caudex, a noun meaning "The stem of a tree., esp. a stem without a branch, as of a palm or a tree fern; also, the perennial rootstock of an herbaceous plant."

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

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