Definition of Cerium
Ce´ri`um
n.
1.
(Chem.)
A
rare
metallic
element
,
occurring
in
the
minerals
cerite
,
allanite
,
monazite
,
etc
.
Symbol
Ce
.
Atomic
weight
141
.
5
.
It
resembles
iron
in
color
and
luster
,
but
is
soft
,
and
both
malleable
and
ductile
.
It
tarnishes
readily
in
the
air
.
Related Words
atomic
number
58
,
bastnaesite
,
bastnasite
,
Ce
,
gadolinite
,
metal
,
metallic
element
,
monazite
,
ytterbite
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Ceremonialism
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