(rā´dē-ō-ăkʹtĭv) adjective. Of or exhibiting radioactivity, radioaktif.
radioactive decay (rĀ´dē-Ō-ăkʹtĭv dĭ-kĀʹ) noun. Spontaneous disintegration of a radioactive substance accompanied by emission of ionizing radiation in the form of particles and gamma rays, reputan radioaktif.
radioactive labelling pelabelan radioaktif
radioactive series (rĀ´dē-Ō-ăkʹtĭv sîrʹēz) noun. A group of isotopes representing various stages of radioactive decay in which the heavier members of the group are transformed into successively lighter ones, the lightest being stable, siri radioaktif.