Dictionary
bar•i•um
Pronunciation: (bâr'ē-um, bar'-), [key]—
n. Chem.
a whitish, malleable, active, divalent, metallic element, occurring in combination chiefly as barite or as witherite.
Symbol: Ba;
at. wt.: 137.34;
at. no.: 56;
sp. gr.: 3.5 at 20°C.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.