acton
1 Americannoun
noun
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Lord John Emerich Edward Dalberg-Acton, 1st Baron, 1834–1902, English historian.
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a former municipal borough in SE England, now part of the London borough of Ealing: center of Puritanism at the time of Cromwell.
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a city in NE Massachusetts.
noun
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John Emerich Edward Dalberg, 1st Baron. 1834–1902, English historian: a proponent of Christian liberal ethics and adviser of Gladstone
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his grandfather, Sir John Francis Edward. 1736–1811, European naval commander and statesman: admiral of Tuscany (1774–79) and Naples (1779 onwards) and chief minister of Naples (1779–1806)
noun
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a jacket or jerkin, originally of quilted cotton, worn under a coat of mail
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a leather jacket padded with mail
noun
Etymology
Origin of acton
1250–1300; Middle English < Anglo-French aketoun, Old French a ( u ) queton < Old Spanish algodon < Spanish Arabic < Arabic al-quṭun the cotton
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Mr. Gould is alumni and student programs manager at the Acton Institute.
From The Wall Street Journal • Jun. 5, 2026
Father Sirico is president emeritus and a co-founder of the Acton Institute.
From The Wall Street Journal • May 28, 2026
Keenan Acton, 26, spent more than four weeks in an induced coma after collapsing at a Hyrox fitness competition in October 2024.
From BBC • May 15, 2026
Its history is linked to WhatsApp: the site was founded by cryptographer and entrepreneur Moxie Marlinspike, with an initial $50 million from WhatsApp co-founder Brian Acton.
From Barron's • Apr. 25, 2026
Acton”—this, apparently, Harold Acton, who was also in Paris then and a friend to both Orwell and Julian—“disagrees. But I think he is not a man to be trusted.”
From "The Secret History" by Donna Tartt
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.