plutonium
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Letter P
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plutonium Definition
(n)
a
solid
silvery
gray
radioactive
transuranic
element
whose
atoms
can
be
split
when
bombarded
with
neutrons
;
found
in
minute
quantities
in
uranium
ores
but
is
usually
synthesized
in
nuclear
reactors
;
13
isotopes
are
known
with
the
most
important
being
plut
plutonium Synonyms
atomic number 94
plutonium
Pu
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