Holocoust or Holocaust: How To spell?

The word Holocoust is misspelled against Holocaust, a noun meaning "A burnt sacrifice; an offering, the whole of which was consumed by fire, among the Jews and some pagan nations."

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

You might be interested to know

Instourated or Instaurated?

Loughterless or Laughterless?

Moucaco or Maucaco?