Ceisium or Caesium: How To spell?

The word Ceisium 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 'ei'
Word contains consecutive vowels 'AE' in between alphabets c & sium is misspelled as 'EI'
Wrong Spelling:  c-ei-sium 
Correct Spelling:  c-ae-sium 
Check more misspelled words of Caesium to spell it correct.

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