Definition of Barium
Ba´ri`um
n.
1.
(Chem.)
One
of
the
elements
,
belonging
to
the
alkaline
earth
group
;
a
metal
having
a
silver-white
color
,
and
melting
at
a
very
high
temperature
.
It
is
difficult
to
obtain
the
pure
metal
,
from
the
facility
with
which
it
becomes
oxidized
in
the
air
.
Atomic
weight
,
137
.
Symbol
,
Ba
.
Its
oxide
called
baryta
.
Related Words
atomic
number
56
,
Ba
,
barite
,
barium
sulphate
,
baryta
,
barytes
,
heavy
spar
,
metal
,
metallic
element
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