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Lissajous figure

American  
[lee-suh-zhoo, lee-suh-zhoo] / ˈli səˌʒu, ˌli səˈʒu /

noun

Physics.

  1. the series of plane curves traced by an object executing two mutually perpendicular harmonic motions.

Lissajous figure British  
/ ˈliːsəˌʒuː, ˌliːsəˈʒuː /

noun

  1. a curve traced out by a point that undergoes two simple harmonic motions in mutually perpendicular directions. The shape of these curves is characteristic of the relative phases and frequencies of the motion; they are used to determine the frequencies and phases of alternating voltages

"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

Etymology

Origin of Lissajous figure

1875–80; named after Jules A. Lissajous (1822–80), French physicist

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.