Meanings
adverbradioactively (comparative more radioactively, superlative most radioactively)
comparative more radioactively · superlative most radioactively
- Using a radioactive substance
- Concerning radioactivity
Origin
- Latinradius
- Frenchradio-
- Proto-Indo-European*h₂eǵ-
- Proto-Indo-European*h₂éǵeti
- Proto-Italic*agō
- Latinagō
- Ancient Greekἐνεργητικός (energētikós)
- Latināctīvu
- Old Frenchactif
- Frenchactif
- Frenchradioactif
- Englishradioactive
- Proto-Indo-European*leyg-
- Proto-Germanic*līką
- Englishradioactively
From radioactive + -ly.
Full word history & related roots →Cite this entry
APA
radioactively. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/radioactively
MLA
“radioactively.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/radioactively. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “radioactively,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/radioactively.
Source: radioactively on Wiktionary, CC BY-SA 4.0.