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Meaning of RADIOTHORIUM
Pronunciation:
`reydeeow'thowreeum
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WordNet Dictionary
Definition:
[n]
radioactive
isotope
of
thorium
with
mass
number
228
 
Synonyms:
thorium-228
 
See Also:
atomic number 90
,
Th
,
thorium
Webster's 1913 Dictionary
Definition:
\
Ra
`
di
*
o
*
tho
"
ri
*
um
\,
n
. (
Chem
.)
A
radioactive
substance
apparently
formed
as
a
product
from
thorium
.
 
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