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erbium
XDict
n
. 耳
PyDict
耳
WordNet
(
r
)
3
.
0
(
2006
) (
WordNet
)
erbium
n
1
:
a
trivalent
metallic
element
of
the
rare
earth
group
;
occurs
with
yttrium
[
synonym
: {
erbium
}, {
Er
}, {
atomic
number
68
}]
The
Collaborative
International
Dictionary
of
English
v
.
0
.
48
(
gcide
)
Erbium
\
Er
"
bi
*
um
\,
n
. [
NL
.
from
Ytterby
,
in
Sweden
,
where
gadolinite
is
found
.
Cf
. {
Terbium
}, {
Yttrium
}, {
Ytterbium
}.]
(
Chem
.)
A
rare
earth
element
of
the
lanthanide
series
associated
with
several
other
rare
elements
in
the
mineral
gadolinite
from
Ytterby
in
Sweden
.
Symbol
Er
.
It
has
atomic
number
68
and
an
atomic
weight
of
167
.
26
.
The
pure
element
is
metallic
with
a
bright
,
silvery
luster
.
It
is
relatively
stable
in
air
,
not
oxidizing
as
quickly
as
some
other
rare
earths
.
Its
salts
are
rose
-
colored
and
give
characteristic
spectra
,
and
the
pink
oxide
has
been
added
as
a
colorant
in
glass
and
porcelain
enamel
glazes
.
Its
sesquioxide
{
Er2O3
}
is
called
erbia
.
--
HCP61
[
1913
Webster
PJC
]
The
Elements
Database
(
element
)
erbium
Symbol
:
Er
Atomic
number
:
68
Atomic
weight
:
167
.
26
Soft
silvery
metallic
element
which
belongs
to
the
lanthanoids
.
Six
natural
isotopes
that
are
stable
.
Twelve
artificial
isotopes
are
known
.
Used
in
nuclear
technology
as
a
neutron
absorber
.
It
is
being
investigated
for
other
possible
uses
.
Discovered
by
Carl
G
.
Mosander
in
1843
.
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