radioactive

adjective
UK: /ˌreɪ.di.əʊˈæk.tɪv/
US: /ˌreɪ.di.oʊˈæk.tɪv/

  1. Emitting or relating to the emission of ionizing radiation or particles.

    1. The waste is radioactive. [ ] [ ]
    2. The scientists measured the radioactive decay of the sample using advanced equipment. [ ] [ ]

  2. Containing or contaminated with radioactive material.

    1. This area is still radioactive. [ ] [ ]
    2. The exclusion zone remains radioactive, posing a significant risk to inhabitants and wildlife. [ ] [ ]

  3. Relating to or caused by radioactivity.

    1. Radioactive fallout covered the area. [ ] [ ]
    2. The potential long-term effects of radioactive contamination are a cause of great concern. [ ] [ ]

Synonyms

radiant contaminated
radioactive noun

  1. A radioactive substance.

    1. The radioactive was contained. [ ] [ ]
    2. The laboratory handles a variety of radioactives for research purposes, following strict safety protocols. [ ] [ ]

Frequently Asked Questions

The word "radioactive" in English means: Emitting or relating to the emission of ionizing radiation or particles., Containing or contaminated with radioactive material., Relating to or caused by radioactivity..

The phonetic transcription of "radioactive" is /ˌreɪ.di.əʊˈæk.tɪv/ in British English and /ˌreɪ.di.oʊˈæk.tɪv/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "radioactive": radiant, contaminated.

Example usage of "radioactive": "The waste is radioactive.". More examples on the page.