radioactivity signifas en esperanta

Angla	Esperanta
radioactivity [radioactivities] (emission of ionizing radiation) noun [UK: ˌreɪ.dɪəʊæk.ˈtɪ.vɪ.ti] [US: ˌreɪ.dɪo.ʊæk.ˈtɪ.vɪ.ti]	radioaktiveconoun

Via historio