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Webster's 1913 Dictionary
RADIO-ACTIVE
RADIO-ACTIVE
Ra
`
di
*o-ac "tive, a. [
Radio-
+
active.
] (
Physics
)
Defn:
Capable
of
luminescence
under
the
action
of
cathode
rays, X rays,
or
any
of
the
allied
forms
of
radiation.
--
Ra
`
di
*
o-
ac
*
tiv
"i *ty, n.
The Wordsmith Dictionary
The Wordsmith Dictionary