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активност meaning in English

BulgarianEnglish
активност noun
{f}

activity [activities](state or quality of being active)
noun
[UK: æk.ˈtɪ.və.ti] [US: æk.ˈtɪ.və.ti]

радиоактивност noun
{f}

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

реактивност noun
{f}

reactivity [reactivities](relative susceptibility to chemical reaction)
noun
[UK: ˌriːæk.ˈtɪ.vɪ.ti] [US: ˌri.ˌæk.ˈtɪ.və.ti]