Clastrum or Claustrum: How To spell?

The word Clastrum is misspelled against Claustrum, a noun meaning "A thin lamina of gray matter in each cerebral hemisphere of the brain of man."

Word contains consecutive vowels 'AU' in between alphabets cl & strum is misspelled as 'A' as letter 'U' is phonetically ignore
Wrong Spelling: cl-a-strum
Correct Spelling: cl-au-strum
Check more misspelled words of Claustrum to spell it correct.