Foucault pendulum

noun

Fou·​cault pendulum ˌfü-ˈkō- How to pronounce Foucault pendulum (audio)
: a freely swinging pendulum that consists of a heavy weight hung by a long wire and that swings in a constant direction which appears to change showing that the earth rotates

Word History

Etymology

J. B. L. Foucault

First Known Use

1931, in the meaning defined above

Time Traveler
The first known use of Foucault pendulum was in 1931

Dictionary Entries Near Foucault pendulum

Cite this Entry

“Foucault pendulum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Foucault%20pendulum. Accessed 28 Nov. 2022.

Kids Definition

Foucault pendulum

noun

Fou·​cault pendulum ˌfü-ˌkō- How to pronounce Foucault pendulum (audio)
: a device that consists of a heavy weight hung by a long wire and that swings in a constant direction which appears to change showing that the earth rotates
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!


Odd Habits and Quirks

  • image1926873504
  • Which of the following best describes an easily irritated person?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ