radioactividade
Portuguese, noun
radioactividade is spelled R-A-D-I-O-A-C-T-I-V-I-D-A-D-E (15 letters) and appears about once in every 13 million words in written Portuguese, the 109,086th most frequent Portuguese word form (wordfreq, 2021 data). Radioactividade is a Portuguese feminine noun meaning “pre-reform spelling (used until 1943 in Brazil and 1990 in Portugal) of radioatividade; still used where the agreement hasn’t come into…” (English Wiktionary, September 2026).
What does radioactividade mean in English?
noun
- 1
femininepre-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
Source: English Wiktionary, Portuguese section, dump of September 2, 2026 (CC BY-SA 4.0).
Forms of radioactividade
- radioactividades plural
Source: English Wiktionary and Portuguese Wiktionary (Wikcionário) (dumps of September 2, 2026 and September 1, 2026).
How common is radioactividade in Portuguese?
radioactividade appears about once in every 13 million words in written Portuguese.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).