radioactivity

CEFRB2

/ˌreɪdɪəʊakˈtɪvɪti/

noun

Türkçe translations

Translating…

In plain English

  1. 01

    noun

    The release of energy from the atoms of certain substances.

  2. 02

    noun

    Extra detail

    The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.

Examples

  • The radioactivity leaked out of the nuclear power plant.

  • 'Radioactivity' is a chemical term.

At a glance

Sits at B2 on the CEFR scale

Senses
3
Parts of speech
1
Citations
1

Deep Dive

noun

Extra meaning

  1. Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.

More examples

In context

  • Today, no one would intentionally smear radioactive materials on their face, but in 1933, the dangers of radioactivity were not yet fully understood.

Quick test

Two questions on this entry. Nothing is scored.

Question 1 · Quick check

The Geiger counter detected high levels of blank from the spill.

Practise this properly in the app, where the word comes back before you forget it.

Nearby

Origin

noun

From radioactive + -ity or radio- + activity.