Greullade or Greillade: How To spell?

The word Greullade is misspelled against Greillade, a noun meaning "Iron ore in coarse powder, prepared for reduction by the Catalan process."

Word contains consecutive vowels 'EI' in between alphabets gr & llade is misspelled as 'EU'
Wrong Spelling:  gr-eu-llade 
Correct Spelling:  gr-ei-llade 
Check more misspelled words of Greillade to spell it correct.