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English Fox - English Dictionary
Meaning of
neptunium
in English
neptunium
us
/ˈnɛp.tu.ni.əm/
uk
/ˈnɛp.tjuː.ni.əm/
#uncommon
Definitions
Noun
a
radioactive
element
(
symbol
Np
,
atomic
number
93
)
Neptunium
is
a
highly
radioactive
element
with
an
atomic
number
of
93
.