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Definition of
neptunium noun
from the Oxford Advanced American Dictionary
neptunium
noun
noun
NAmE
/
/
nɛpˈtuniəm
/
/
[
uncountable
]
(
symbol
Np
)
jump to other results
a chemical element.
Neptunium
is a
radioactive
metal.
See
neptunium
in the Oxford Advanced Learner's Dictionary
Check pronunciation:
neptunium
Nearby words
nepotism
noun
Neptune
noun
neptunium
noun
nerd
noun
nerve
noun