exthorio
English
Etymology
From
Latin
ex
(
“
out of
”
)
+
thōriō
(
“
thorium
”
)
.
Noun
exthorio
(
uncountable
)
(
obsolete
)
Obsolete form of
thoron
(
“
radon-220
”
)
.
Coordinate terms
exactinio
(radon-219)
exradio
(radon-222)