English Dictionary
Computer Dictionary
Video Dictionary
Thesaurus
Dream Dictionary
Medical Dictionary
Search Dictionary:
Meaning of ATOMIC NUMBER 91
Sponsored Links:
 
WordNet Dictionary
Definition:
[n]
a
short
-
lived
radioactive
metallic
element
formed
from
uranium
and
disintegrating
into
actinium
and
then
into
lead
 
Synonyms:
Pa
,
protactinium
,
protoactinium
 
See Also:
metal
,
metallic element
COPYRIGHT © 2000-2008 HYPERDICTIONARY.COM
HOME
|
ABOUT HYPERDICTIONARY