Ceusium or Caesium: How To spell?
The word Ceusium is misspelled against Caesium, a noun meaning "A rare alkaline metal found in mineral water; -- so called from the two characteristic blue lines in its spectrum. It was the first element discovered by spectrum analysis, and is the most strongly basic and electro-positive substance known. Symbol Cs. Atomic weight 132.6."
Caesium has vowels 'ae' together mispronounced as 'eu'Word contains consecutive vowels 'AE' in between alphabets c & sium is misspelled as 'EU'
Wrong Spelling:  c-eu-sium  Correct Spelling:  c-ae-sium 
Check more misspelled words of Caesium to spell it correct.