There are 2 main definitions of curie in English:


Syllabification: cu·rie
Pronunciation: /ˈkyo͝orē, kyo͝oˈrē
(abbreviation: Ci)

noun (plural curies)

1A unit of radioactivity, corresponding to 3.7 × 1010 disintegrations per second.
More example sentences
  • The activity (rate of decay) of Rn is expressed in units called curies.
  • The sediment around its shores blew 5 million curies of radioactive dust over 25,000 square kilometres, irradiating 500,000 people.
  • In 1957, there was an explosion at a waste storage facility that blew 2 million curies of radiation into the atmosphere.
1.1The quantity of radioactive substance that emits one curie of activity.
More example sentences
  • Each generator contains up to 40,000 curies of highly radioactive material.
  • During that time I used to handle vials with over 5 curies (which is about 100 times more than what you inquire about) of this radioactive substance on almost daily basis.
  • The new tenants discovered an old irradiator containing 19 curies of cobalt-60.


early 20th century: named after Pierre and Marie Curie.

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There are 2 main definitions of curie in English:


Syllabification: Cu·rie
Pronunciation: /kyo͝oˈrē, ˈkyo͝orē
Name of French physicists Marie ( 1867–1934), born Maria Sklodowska in Poland, and her husband Pierre ( 1859–1906); pioneers in radioactivity. Working together on the mineral pitchblende, they discovered the elements polonium and radium. After her husband’s accidental death, Marie isolated radium. She died of leukemia, caused by prolonged exposure to radioactive materials. She shared the 1903 Nobel Prize for Physics and the 1911 Nobel Prize for Chemistry with Becquerel.

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