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Yerkes

American  
[yur-keez] / ˈjɜr kiz /

noun

  1. Charles Tyson, 1837–1905, U.S. financier and mass-transit magnate.

  2. Robert Mearns 1876–1956, U.S. psychologist and psychobiologist: pioneered in studies of the great apes.


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.

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About the author: Sarah Yerkes is a senior fellow in the Middle East Program at the Carnegie Endowment for International Peace.

From Barron's ● Apr. 10, 2026

It is “likely that the turnout this time around will be similarly abysmal”, said Ms Yerkes.

From BBC ● Oct. 5, 2024

A psychologist at Emory University in Atlanta and a research scientist at the school’s Yerkes National Primate Research Center, Professor de Waal objected to the common usage of the word “instinct.”

From New York Times ● Mar. 20, 2024

“It has been frustrating to see this lack of teeth to any of the U.S. responses,” Yerkes said.

From Reuters ● Mar. 16, 2023

In 1957, I was a graduate student at the University of Chicago’s Yerkes Observatory.

From "Cosmos" by Carl Sagan

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