reactivo
Portuguese, noun
reactivo is spelled R-E-A-C-T-I-V-O (8 letters) and appears about once in every 19 million words in written Portuguese, the 128,503rd most frequent Portuguese word form (wordfreq, 2021 data). Reactivo is a Portuguese masculine noun meaning “pre-reform spelling (used until 1943 in Brazil and 1990 in Portugal) of reativo; still used where the agreement hasn’t come into effect and…” (English Wiktionary, September 2026).
What does reactivo mean in English?
adjective
- 1
pre-reform spelling (used until 1943 in Brazil and 1990 in Portugal) of reativo; still used where the agreement hasn’t come into effect and may occur as a sporadic misspelling
noun
- 1
masculinepre-reform spelling (used until 1943 in Brazil and 1990 in Portugal) of reativo; 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 reactivo
- reactiva feminine
- reactivos masculine plural
- reactivas feminine plural
Source: English Wiktionary and Portuguese Wiktionary (Wikcionário) (dumps of September 2, 2026 and September 1, 2026).
How common is reactivo in Portuguese?
reactivo appears about once in every 19 million words in written Portuguese.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).