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Foucault

American  
[foo-koh] / fuˈkoʊ /

noun

  1. Jean Bernard Léon 1819–68, French physicist.

  2. Michel 1926–84, French philosopher.


Foucault British  
/ fuko /

noun

  1. Jean Bernard Léon (ʒɑ̃ bɛrnar leɔ̃). 1819–68, French physicist. He determined the velocity of light and proved that light travels more slowly in water than in air (1850). He demonstrated by means of the pendulum named after him the rotation of the earth on its axis (1851) and invented the gyroscope (1852)

  2. Michel . 1926–84, French philosopher and historian of ideas. His publications include Histoire de la folie (1961) and Les Mots et les choses (1966)

"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

Foucault Scientific  
/ fo̅o̅-kō /
  1. French physicist who determined that light travels more slowly in water than in air, confirming predictions made by the wave theory of light. In 1850 Foucault also measured the absolute velocity of light. In 1851, by using a type of pendulum that is now named after him, Foucault demonstrated the rotation of the Earth, and in 1852 perfected a gyroscope for the same purpose.


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.

See Examples For:

Nothing sets Mr. Saad off more than postmodernism, “a dreadful idea” that came into vogue in the 1960s thanks to a trio of Frenchman, Jacques Derrida, Jacques Lacan and Michel Foucault.

From The Wall Street Journal Jul. 10, 2026

To our shame, even nonbelievers such as Gore Vidal and Michel Foucault understood this.Foucault once said, “We are creating a hermaphrodism — a false species.”

From Washington Times Jun. 11, 2023

He was anti-theory at a time when graduate students in the arts and humanities could not afford to be oblivious of Foucault, Derrida and the army of faddish post-modernists.

From Los Angeles Times Mar. 14, 2023

In all likelihood, he encountered the work of Foucault during his studies there.

From Salon Feb. 7, 2023

She left behind an autobiography, which Michel Foucault discovered in the archives of the French Department of Public Hygiene.

From "Middlesex: A Novel" by Jeffrey Eugenides

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