barium
be ree uhm
- n a soft silvery metallic element of the alkali earth group; found in barite
 
- The Pope's housekeeper, Sister Pasqualina, handed him a "barium breakfast"a glass of gritty, ill-tasting barium sulfate which he swallowed slowly with unconcealed dislike.
 - When the X-ray was discovered, barium sulphate, which is opaque to the Xray, was given, and the passage of the barium was observed through the fluoroscope.
 - This barium was the clue to something terrific.