Please enable javascript to use dictionary! Howto enable javascript?
activity, movement, action▼noun
radioactivity [radioactivities]▼noun[UK: ˌreɪ.dɪəʊæk.ˈtɪ.vɪ.ti] [US: ˌreɪ.dɪo.ʊæk.ˈtɪ.vɪ.ti]
↑