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RADIOACTIVE (3)
RADIOACTIVE (3)
ScnMaster
giving off, or capable of giving off, radiant
energy
in the
form
of particles or rays by the
spontaneous
disintegration of atomic
nuclei
: said of certain
elements
, as
plutonium
,
uranium
, etc., and their products.
—9th
ACC
Volume 1 Approved Glossary