curie

curie /cu·rie/ (Ci) (ku´re) a unit of radioactivity, defined as the quantity of any radioactive nuclide in which the number of disintegrations per second is 3.700 × 1010.

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Cu·rie (kyr, ky-r, kü-), Marie Originally Manja Skodowska. 1867-1934.

Polish-born French chemist. She shared a 1903 Nobel Prize with her husband, Pierre Curie (1859-1906), and Henri Becquerel (1852-1908) for fundamental research on radioactivity. In 1911 she won a second Nobel Prize for her discovery and study of the elements radium and polonium.

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cu·rie (kyr, ky-r)

n. Abbr. Ci

A unit of radioactivity, equal to the amount of a radioactive isotope that decays at the rate of 3.7 × 10¹⁰ disintegrations per second.

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curie (Ci)

[kyoo͡r′ē]

Etymology: Marie Skladowska Curie, Polish-born chemist and physicist, 1867-1934; Pierre Curie, French chemist and physicist, 1859-1906; both Nobel laureates

a unit of radioactivity used before adoption of the becquerel (Bq) as the SI unit. It is equal to 3.70 × 10¹⁰ Bq.

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curie (ky´rē),

a measurement of radioactivity produced by the disintegration of unstable elements. The curie is that quantity of a radioactive nuclide in which the number of disintegrations per second is 3.700 times 10¹⁰. Because the curie is a relatively large unit, the millicurie (0.00 curie) and the microcurie (one-millionth of a curie) are more often used. The curie is based on the number of nuclear disintegrations and not on the number or amount of radiations emitted.

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curie

a non-SI unit of radioactivity, defined as the quantity of any radioactive nuclide in which the number of disintegrations per second is 3.7 × 10¹⁰; abbreviated Ci. Now replaced by the becquerel.