radioactividade

== Portuguese == === Noun === radioactividade f (plural radioactividades) pre-reform spelling (used until 1943 in Brazil and 1990 in Portugal) of radioatividade; still used where the agreement hasn’t come into effect and may occur as a sporadic misspelling === Further reading === “radioactividade”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026