noun🔗ShareRadiactividadSpontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus."The old watch contained radium, which caused its hands to glow in the dark due to radioactivity. "El viejo reloj contenía radio, lo que hacía que sus manecillas brillaran en la oscuridad debido a la radiactividad.physicsenergysubstancechemistryenvironmentsciencematerialChat with AIVocabulary GamePractice Reading
noun🔗ShareRadiactividad, radiaciónThe radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc."The radioactivity from the old smoke detector is dangerous and should be disposed of properly. "La radiactividad del antiguo detector de humo es peligrosa y debe desecharse correctamente.physicsenergysubstancescienceChat with AIVocabulary GamePractice Reading
