B2 noun ˌreɪ.di.oʊ.ækˈtɪv.ə.ti
radioactivity
radiactividad
Meaning
The emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
Example
Radioactivity is used in medical treatments like cancer therapy.
La radioactividad se usa en tratamientos médicos como la terapia del cáncer.