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neodymium
XDict
n
. 钕
PyDict
钕
WordNet
(
r
)
3
.
0
(
2006
) (
WordNet
)
neodymium
n
1
:
a
yellow
trivalent
metallic
element
of
the
rare
earth
group
;
occurs
in
monazite
and
bastnasite
in
association
with
cerium
and
lanthanum
and
praseodymium
[
synonym
:
{
neodymium
}, {
Nd
}, {
atomic
number
60
}]
The
Collaborative
International
Dictionary
of
English
v
.
0
.
48
(
gcide
)
Neodymium
\
Ne
`
o
*
dym
"
i
*
um
\,
n
. [
NL
.
Dee
{
Neo
-},
and
{
Didymium
}.]
(
Chem
.)
The
chemical
element
of
atomic
number
60
,
one
of
the
rare
earth
elements
.
Symbol
Nd
.
Atomic
weight
144
.
27
.
Note
:
It
is
a
rare
metallic
element
occurring
in
combination
with
cerium
,
lanthanum
,
and
other
rare
metals
,
and
forming
amethyst
-
colored
salts
.
It
was
originally
thought
to
be
part
of
a
supposed
new
element
didymium
,
obtained
from
cerite
in
1843
.
Later
this
was
resolved
into
two
elements
,
neodymium
and
praesodymium
by
von
Welsbach
in
1885
.
It
is
chiefly
trivalent
.
It
is
a
faintly
yellow
metal
.
[
1913
Webster
PJC
]
The
Elements
Database
(
element
)
neodymium
Symbol
:
Nd
Atomic
number
:
60
Atomic
weight
:
144
.
24
Soft
bright
silvery
metallic
element
,
belongs
to
the
lanthanoids
.
Seven
natural
isotopes
,
Nd
-
144
being
the
only
radioactive
one
with
a
half
-
life
of
10
^
10
to
10
^
15
years
.
Six
artificial
radioisotopes
have
been
produced
.
The
metal
is
used
in
glass
works
to
color
glass
a
shade
of
violet
-
purple
and
make
it
dichroic
.
One
of
the
more
reactive
rare
-
earth
metals
,
quickly
reacts
with
air
.
Used
in
some
rare
-
earth
alloys
.
Neodymium
is
used
to
color
the
glass
used
in
welders
'
glasses
.
Neodymium
is
also
used
in
very
powerful
,
permanent
magnets
(
Nd2Fe14B
).
Discovered
by
Carl
F
.
Auer
von
Welsbach
in
Austria
in
1885
by
separating
didymium
into
its
elemental
components
{
praseodymium
}
and
neodymium
.
The
name
comes
from
the
Greek
words
"
neos
didymos
"
which
means
"
new
twin
".
Neodymium
should
be
considered
highly
toxic
,
however
evidence
would
seem
to
show
that
it
acts
as
little
more
than
a
skin
and
eye
irritant
.
The
dust
however
,
presents
a
fire
and
explosion
hazard
.
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