radioactive

adj.

1. Of, exhibiting, or caused by radioactivity.
2. Informal. Extremely sensitive or controversial: "Perhaps race is now too radioactive a topic, in an era of political correctness" (David Nyhan).

radioactively ra'di·o·ac'tive·ly adv.

A descriptive term for a material made up of atoms in which radioactivity occurs.

Characterized by radioactivity.

• r. decay — spontaneous decomposition of the nuclei of the atoms of radioactive substances. Measured as the proportion of the atoms in a radionuclide that decompose per unit of time, usually stated as the half-life of that particular isotope.
• r. fallout — dissemination of radioactive substances through the atmosphere and deposition on the environment generally; causes radiation injury.
• r. isotope — radionuclide. A radioactive nuclide, e.g. radioactive iodine or strontium.
• r. tracer — see radioactive tracer.

IN BRIEF: Giving off energy as a result of the breaking up of nuclei of atoms.

When encountered, their sudden richness is so breathtaking and light-intensive that, like radioactive materials, they must be handled with great care. — Neal Maxwell

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Dansk (Danish)
adj. - radioaktiv

Nederlands (Dutch)
radioactief

Français (French)
adj. - radioactif

Deutsch (German)
adj. - radioaktiv

Ελληνική (Greek)
adj. - (φυσ.) ραδιενεργός

Italiano (Italian)
radioattivo

Português (Portuguese)
adj. - radioativo

Русский (Russian)
радиоактивный

Español (Spanish)
adj. - radiactivo

Svenska (Swedish)
adj. - radioaktiv

中文（简体）(Chinese (Simplified))
放射性的, 有辐射能的

中文（繁體）(Chinese (Traditional))
adj. - 放射性的, 有輻射能的

한국어 (Korean)
adj. - 방사성이 있는

日本語 (Japanese)
adj. - 放射性の

العربيه (Arabic)
‏(صفه) إشعاعي النشاط‏

עברית (Hebrew)
adj. - ‮פולט קרינה גלית, רדיואקטיבי‬

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radioactive taken