radioactive
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radioactive
- /ˌɹeɪdiəʊˈaktɪv/ UK
- /ˌɹeɪdioʊˈæktɪv/ US
Rhymes with -æktɪv
Where it comes from
Coined by Pierre Curie and Marie Curie in 1898 as French radio-actif, equivalent to English radio- + active.
adjective more radioactive · most radioactive · radio-active
- Exhibiting radioactivity. As a matter of fact many of our best drinking waters have all sorts of unspecified qualities. Burton water, for example, is radioactive by Beetham's standards up to the ninth degree.
- Dangerous and disgusting, particularly of people or ideas. Even sleazy tactics and his radioactive mouth may not be able to contain this debacle.
noun radioactives · radio-active
- Any radioactive substance. Any ship nearby will receive a lethal dose of gamma rays, neutrons, and other radioactives.
Thesaurus
Closest in meaning: hot, radiological, radiative, radiometric, nuclear, radiation, radioactivity, radiographic, radiologic, irradiated, radiant, isotope, radiology, high-level, radiated, reactive
Translations
Every language
adj exhibiting radioactivity
| Español | radiactivo |
|---|---|
| 日本語 | 放射性 |
| 中文 | 放射性 |
| हिन्दी | विकिरणशील vikiraṇśīl |
| Português | radioactivo, radioativo |
| Français | radioactif |
| Deutsch | radioaktiv |
| Italiano | radioattivo |
| Ελληνικά | ραδιοενεργό radioenergó |
| Română | radioactiv |
| Русский | радиоакти́вный radioaktívnyj |
| עברית | רדיואקטיבי radioaktivi |
Talk about this word "radioactive." Wiktionary, via Micwyn, micwyn.com/word/radioactive. Accessed 6 Nov. 2026. radioactive. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/radioactive "radioactive." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/radioactive.Cite this
@misc{radioactive_2026,
title = {radioactive},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/radioactive},
urldate = {2026-11-06}
}
