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quadrillion

Overview page. Subjects: Mathematics.

A thousand million million (1015). In Britain it used to mean a million to the power of 4 (1024) but this is no longer used on the rare occasions the word is used.

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quadrillion

Overview page. Subjects: Mathematics.

A thousand million million (1015). In Britain it used to mean a million to the power of 4 (1024) but this is no longer used on the rare occasions the word is used.

See overview in Oxford Index

quadrillion

Donald Fenna.

in A Dictionary of Weights, Measures, and Units

January 2002; p ublished online January 2004 .

Reference Entry. Subjects: Numerical and Computational Mathematics. 6 words.

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quadrillion

Edited by Jeremy Butterfield.

in Fowler’s Dictionary of Modern English Usage

January 2015; p ublished online June 2015 .

Reference Entry. Subjects: Language Reference. 19 words.

a thousand raised to the fifth (or formerly, especially in BrE, the eighth) power (1015 and 1024 respectively).

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quadrillion

Edited by T. F. Hoad.

in The Concise Oxford Dictionary of English Etymology

January 1996; p ublished online January 2003 .

Reference Entry. Subjects: History of English. 19 words.

fourth power of a million; (U.S.) fifth power of a thousand. XVII. — F. quadrillon, f. QUADRI- + (m)illion

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quadrillion

Christopher Clapham and James Nicholson.

in The Concise Oxford Dictionary of Mathematics

January 2009; p ublished online January 2009 .

Reference Entry. Subjects: Pure Mathematics. 34 words.

A thousand million million (1015). In Britain it used to mean a million to the power of 4

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quadrillion

James Nicholson.

in The Concise Oxford Dictionary of Mathematics

January 2014; p ublished online September 2014 .

Reference Entry. Subjects: Pure Mathematics. 34 words.

A thousand million million (1015). In Britain it used to mean a million to the power of 4

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quad

Donald Fenna.

in A Dictionary of Weights, Measures, and Units

January 2002; p ublished online January 2004 .

Reference Entry. Subjects: Numerical and Computational Mathematics. 51 words.

[quadrillion]

engineering. A generic measure of energy for fuel reserves, = 1 quadrillion B.t.u., i.e. 1015 B.t.u. =

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<span class="smallCaps">quadri-</span>

Bryan A. Garner.

in Garner’s Modern English Usage

January 2016; p ublished online August 2016 .

Reference Entry. Subjects: Language Reference. 273 words.

In Latinate words denoting four of something, quadri- is the usual form, as in quadripartite (= having four parts), quadrillion

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-illion

Christopher Clapham and James Nicholson.

in The Concise Oxford Dictionary of Mathematics

January 2009; p ublished online January 2009 .

Reference Entry. Subjects: Pure Mathematics. 32 words.

Suffix denoting numbers of millions. Common usage now is that million, billion, trillion, quadrillion, quintillion etc. are successively multiplied by

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‐illion

James Nicholson.

in The Concise Oxford Dictionary of Mathematics

January 2014; p ublished online September 2014 .

Reference Entry. Subjects: Pure Mathematics. 32 words.

Suffix denoting numbers of millions. Common usage now is that million, billion, trillion, quadrillion, quintillion etc. are successively multiplied by

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