a soft silvery-white metallic element of the alkaline earth group. It is used in bearing alloys and compounds used as pigments. Symbol: Ba; atomic no: 56; atomic wt: 137.327; valency: 2; relative density: 3.5; melting pt: 729°C; boiling pt: 1805°C
WordReference Random House Learner's Dictionary of American English © 2025
bar•i•um /ˈbɛriəm, ˈbær-/USA pronunciation
n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2025- Chemistrya whitish, soft metallic element.
bar•i•um
(bâr′ē əm, bar′-),USA pronunciation n. [Chem.]
- Chemistrya 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.
- bar(ytes) + -ium 1800–10
Collins Concise English Dictionary © HarperCollins Publishers::
'barium' also found in these entries (note: many are not synonyms or translations):
-ium
- Ba
- GI series
- alkaline earth
- alkaline-earth metal
- ba
- baric
- barite
- barium 140
- barium bromate
- barium carbonate
- barium chloride
- barium chromate
- barium enema
- barium hydroxide
- barium meal
- barium oxide
- barium peroxide
- barium stearate
- barium sulfate
- barium sulfide
- barium thiosulfate
- barium titanate
- barium x-ray
- barium yellow
- baryta
- baryta water
- barytes
- barytocalcite
- benitoite
- blanc fixe
- bromic acid
- chrome yellow
- contrast medium
- feldspar
- hyalophane
- lithopone
- nephelometer
- witherite