radioactivity
IPA: rˈeɪdioʊæktˈɪvʌti
noun
- Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.
- The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.
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Examples of "radioactivity" in Sentences
- Is radioactivity the study or theory
- Radioactivity is also seen in the bladder.
- It is important to know the level of radioactivity exposure.
- The compound is radioactive due to the radioactivity of thorium.
- Nevertheless most of the radioactivity was contained at the site.
- The carrier is washed, and the radioactivity of the carrier is measured.
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