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Clark, Sir Kenneth McKenzie 1903-1983.
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British art historian whose works include The Nude (1956), Civilisation (1969), and Feminine Beauty (1980).

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Clark, William 1770-1838.
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American explorer who joined Meriwether Lewis in an expedition to the Pacific Ocean (1804-1806). Clark was responsible for the careful mapmaking en route.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Clark, Kenneth Bancroft 1914-2005.
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Panamanian-born American psychologist and author who demonstrated the psychological effects of racial segregation and urban poverty, influencing the Supreme Court ruling in Brown v. Board of Education (1954).

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Clark, Mark Wayne 1896-1984.
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American general who was Allied commander in North Africa and Italy in World War II and supreme commander of United Nations forces in Korea (1952-1953).

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Clark, John Bates 1847-1938.
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American economist known for his theory of marginal productivity. He wrote The Philosophy of Wealth (1885) and The Distribution of Wealth (1899).

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Clark, George Rogers 1752-1818.
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American military leader and frontiersman who led numerous raids on British troops and Native Americans in the Northwest Territory during the Revolutionary War.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Clark (klärk), Charles Joseph Known as "Joe." Born 1939.
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Canadian politician who served as prime minister (1979-1980).

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 

Indo-European & Semitic Roots Appendices

    Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

    Indo-European Roots

    Semitic Roots

    The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.