radioactive material
Defined in 1 dictionary — U.S. Code
United States Code
18 U.S.C. § 2283 — in this section (6 versions over time)
The term “radioactive material” means—
(A) source material and special nuclear material, but does not include natural or depleted uranium;
(B) nuclear by-product material;
(C) material made radioactive by bombardment in an accelerator; or
(D) all refined isotopes of radium.
18 U.S.C. § 2332i — as used in this section
"radioactive material" means nuclear material and other radioactive substances that contain nuclides that undergo spontaneous disintegration (a process accompanied by emission of one or more types of ionizing radiation, such as alpha-, beta-, neutron particles and gamma rays) and that may, owing to their radiological or fissile properties, cause death, serious bodily injury or substantial damage to property or to the environment;