The meaning of RADIOACTIVE is of, caused by, or exhibiting radioactivity. How to use radioactive in a sentence.

Dec 6, 2025 · Radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. It is, in essence, an attribute of individual atomic nuclei. …

RADIOACTIVE definition: 1. having or producing powerful and dangerous energy that comes from the breaking up of atoms: 2…. Learn more.

Feb 22, 2024 · But some atoms have an unstable combination blend of protons and neutrons, and these are considered radioactive. To get to a more stable state, the atom expels energy from the nucleus in …

Radioactivity is the release of energy from the decay of the nuclei of certain kinds of atoms and isotopes. Atomic nuclei consist of protons and neutrons bound together in tiny bundles at the center of atoms.

Something that is radioactive contains a substance that produces energy in the form of powerful and harmful rays. The government has been storing radioactive waste at Fernald for 50 years.

May 1, 2025 · These unstable atoms release excess energy in the form of radiation — a process called radioactive decay. As atoms decay, they turn into different elements or isotopes in their attempt to …

If something is radioactive, it emits radiation, which usually takes the form of electromagnetic waves or fast-moving elementary particles, such as protons or neutrons.While low doses of radiation are …

Jul 23, 2025 · Radioactive Elements are the elements that emit radioactive waves like alpha waves, beta waves, and gamma waves. The Process is called Radioactivity. They are found throughout the …

Definition of radioactive adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.