radiactivo

== Portuguese == === Adjective === radiactivo (feminine radiactiva, masculine plural radiactivos, feminine plural radiactivas) pre-reform spelling (used until 1943 in Brazil and 1990 in Portugal) of radioativo; still used where the agreement hasn’t come into effect and may occur as a sporadic misspelling === Further reading === “radiactivo”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026 == Spanish == === Alternative forms === radioactivo === Pronunciation === IPA(key): /radjaɡˈtibo/ [ra.ð̞jaɣ̞ˈt̪i.β̞o] Rhymes: -ibo Syllabification: ra‧diac‧ti‧vo === Adjective === radiactivo (feminine radiactiva, masculine plural radiactivos, feminine plural radiactivas) radioactive ==== Derived terms ==== ==== Related terms ==== === Further reading === “radiactivo”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025