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ci

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Ci

curie; curies.

C.I.

Channel Islands.

C&I

1. commerce and industry.
2. commercial and industrial.

cu⋅rie

[kyoor-ee, kyoo-ree]
–noun Physics, Chemistry.
a unit of activity of radioactive substances equivalent to 3.70 × 1010 disintegrations per second: it is approximately the amount of activity produced by 1 g of radium-226. Abbreviation: Ci

Origin:
1910; named in memory of Pierre Curie
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Ci  
abbr.  curie
CI  
abbr.  
  1. certificate of insurance

  2. cost and insurance

cu·rie   (kyŏŏr'ē, kyŏŏ-rē')   
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.

[After Pierre Curie.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

curie 
"unit of radioactivity," 1910, from Pierre Curie (1859-1906), who with his wife, Marie (1867-1934), discovered radium.
Online Etymology Dictionary, © 2001 Douglas Harper
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Legal Dictionary

Main Entry: CI
Function: abbreviation
certificate of insurance; cost and insurance
Merriam-Webster's Dictionary of Law, © 1996 Merriam-Webster, Inc.
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Medical Dictionary

Main Entry: CI
Function: abbreviation
chemotherapeutic index

Main Entry: cu·rie
Pronunciation: 'kyu(&)r-(")E, kyu-'rE
Function: noun
1 : a unit quantity of any radioactive nuclide in which 3.7× 1010disintegrations occur per second
2 : a unit of radioactivity equal to 3.7 × 1010disintegrations per second
Cuárie /k[UE]-rE/, Pierre (1859–1906) and Marie Słodowska (1867–1934), French chemists and physicists. The Curies were two of the most important andinfluential figures in modern physics. Their major joint contributions include the discovery, with Henri Becquerel, of radioactivity, and the discovery and isolation of radium and polonium in 1898. In1910 the first International Congress of Radiology honored the husband and wife team by establishing curie as a term for a unit of measurement for radioactivity. The element curium was named inhonor of the Curies in 1944 by its discoverers, a team of scientists at the University of Chicago. The Curies were awarded the Nobel Prize for Physics in 1903, and Marie Curie was awarded the NobelPrize for Chemistry in 1911.
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

Ci abbr.
curie

CI abbr.
color index

Curie Cu·rie (ky&oobreve;r'ē, ky&oobreve;-rē', kü-), Marie. Originally Manja Skłodowska.. 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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
Curie, Marie 1867-1934.  
Polish-born French chemist who pioneered research into radioactivity. Following Antoine Henri Becquerel's discovery of radioactivity, she investigated uranium with her husband, Pierre Curie (1859-1906). Together they discovered the elements radium and polonium. Marie Curie later isolated pure radium and developed the use of radioactivity in medicine.

Our Living Language  : The study of radioactivity owes much of its start and early development to Marie Curie, born Maria Skłodowska in Poland in 1867. She was exposed to science early by her father, a mathematician and physicist, and in her young adulthood she moved to Paris, where she soon met many prominent physicists, including Pierre Curie, whom she married in 1895. In 1896 Henri Becquerel discovered a new phenomenon that Curie would soon name radioactivity, and together with Pierre she discovered two new elements, polonium and radium, in 1898. For their discovery of radioactivity, the three won the 1903 Nobel Prize for physics. In 1906, after her husband died unexpectedly, she filled his vacant professorship at the Sorbonne, becoming the first woman to teach there. In 1911 she became the first person to win a second Nobel Prize (for chemistry), which she received for the isolation of pure radium. This was an important feat because, before the invention of particle accelerators, radioactivity could only be effectively studied if one had an abundant and concentrated supply of highly radioactive sources; much of her work was spent developing techniques to create such stockpiles. Curie also saw the need for such supplies in medicine. Her frequent exposure to radioactivity apparently precipitated the leukemia that took her life in 1934, but her work was continued by her daughter Irène (1897-1956), already an important nuclear physicist in her own right.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

ci networking
The country code for Cote d'Ivoire (the Ivory Coast).
[The Jargon File]
(1999-01-27)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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Abbreviations & Acronyms
Ci
  1. cirrus

  2. curie

CI
  1. certificate of insurance

  2. confidence interval

  3. Côte d'Ivoire (international vehicle ID)

  4. counterintelligence

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia

ci

in Chinese poetry, song form characterized by lines of unequal length with prescribed rhyme schemes and tonal patterns, each bearing the name of a musical air. The varying line lengths are comparable to the natural rhythm of speech and therefore are easily understood when sung. First sung by ordinary people, they were popularized by professional women singers and attracted the attention of poets during the Tang dynasty (618-907). It was not, however, until the transitional period of the Five Dynasties (907-960), a time of division and strife, that ci became a major vehicle for lyrical expression. Of ci poets in this period, the greatest was Li Yu, last monarch of the Nan Tang (Southern Tang) dynasty. The ci served as the predominant form for verse of the Song dynasty (960-1279).

Learn more about ci with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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