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Meaning of PROMETHIUM
Pronunciation:
pru'meetheeum
WordNet Dictionary
Definition:
[n]
a
soft
silvery
metallic
element
of
the
rare
earth
group
having
no
stable
isotope
;
was
discovered
in
radioactive
form
as
a
fission
product
of
uranium
Websites:
Synonyms:
atomic number 61
,
Pm
See Also:
metal
,
metallic element
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