Category
page 1Barium

barium
Barium is a chemical element; it has symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Because of its high chemical reactivity, barium is never found in nature as a free element.
Humphry Davy
British chemist
barium star
star whose spectra indicate an overabundance of ionized barium
isotope of barium
lower gastrointestinal series
radiographs used to examine abnormalities of the colon
upper gastrointestinal series
radiographs used to examine abnormalities of the digestive system excluding the colon
baritosis
Baritosis is a benign type of pneumoconiosis, which is caused by long-term exposure to the dust of insoluble compounds of barium, such as ground baryte ore.