radioactivity
noun/ˌreɪdioʊækˈtɪvɪti/
Frequency rank: #14,241 of 20,003 in the WORDED list (wordfreq data)
Meaning
The spontaneous emission of radiation from the nuclei of unstable atoms.
Example sentence
Scientists measured high levels of radioactivity near the old nuclear reactor.
Synonyms & related words
More words in ranks 14,201–14,300
- outedpublicly revealed private or secret information about someone, especially regarding identity or affiliation.
- pectoralrelating to or located in the chest area.
- primroseA small wild or garden plant that produces pale yellow flowers in early spring.
- pungentHaving a sharply strong or biting smell or taste.
- putterto occupy oneself in a leisurely, aimless way; to do small tasks without urgency.
- recessiverelating to a gene or trait that is only expressed when two copies are inherited, not overriding a dominant trait.
- reeveA local official in medieval England responsible for managing an estate or district on behalf of a lord.
- relativisticrelating to or based on the theory of relativity, especially describing effects that become significant at very high speeds or strong gravitational fields.
- remandto send a defendant back into custody or on bail while awaiting trial.
- repletefilled or well-supplied with something, especially food; completely full.