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Protagoras

American  
[proh-tag-er-uhs] / proʊˈtæg ər əs /

noun

  1. c480–c421 b.c., Greek Sophist philosopher.


Protagoras British  
/ prəʊˈtæɡəˌræs /

noun

  1. ?485–?411 bc , Greek philosopher and sophist, famous for his dictum "Man is the measure of all things."

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Example Sentences

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Mr. Stuttard is impressed by Pericles’ association with intellectuals such as Protagoras, who claimed that “man is the measure of all things.”

From The Wall Street Journal • Apr. 10, 2026

You know, it goes back to Plato’s Protagoras.

From The New Yorker • Oct. 28, 2019

At one particularly erudite confrontation, the movie director Michelangelo Antonioni is pitted against an unprepossessing old woman; still another requires the group’s mysterious leader, known as the Great Protagoras, to face an upstart challenger.

From Washington Post • Aug. 22, 2017

“Man is the measure of all things,” said Protagoras.

From The Guardian • Aug. 1, 2014

Anaxagoras, Protagoras, and of course Socrates were hauled up on charges of heresy and impiety.

From "Circumference" by Nicholas Nicastro

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