# FitzGerald contraction

noun, Physics.
1.
the hypothesis that a moving body exhibits a contraction in the direction of motion when its velocity is close to the speed of light.
Also called FitzGerald-Lorentz contraction
[fits-jer-uh ld lawr-ents, -lohr-] /fɪtsˈdʒɛr əld ˈlɔr ɛnts, -ˈloʊr-/ (Show IPA),
Lorentz-FitzGerald contraction, Lorentz contraction, length contraction.
Origin of FitzGerald contraction
1915-1920
1915-20; named after G. F. FitzGerald

## Lorentz-FitzGerald contraction

[lawr-uh nts-fits-jer-uh ld, lohr-] /ˈlɔr ənts fɪtsˈdʒɛr əld, ˈloʊr-/
noun, Physics.
Also called Lorentz contraction.
Origin
1920-25
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
British Dictionary definitions for lorentz contraction

## Lorentz-Fitzgerald contraction

noun
1.
the supposed contraction of a body in the direction of its motion through the ether, postulated to explain the result of the Michelson-Morley experiment. The special theory of relativity denies that any such real change can occur in a body as a result of uniform motion but shows that an observer moving with respect to the body will determine an apparent change given by a formula similar to that of Lorentz and Fitzgerald
Word Origin
C20: named after H. A. Lorentz and G. F. Fitzgerald (1851–1901), Irish physicist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
lorentz contraction in Science
 Lorentz-FitzGerald contraction   (lôr'ənts-fĭts-jěr'ld)    The shortening of an object along its direction of motion as its speed approaches the speed of light, as measured by an observer at rest with respect to the body. Lorentz-FitzGerald contraction is an effect predicted by Einstein's theory of Special Relativity. It is named for Dutch physicist Hendrik Lorentz and Irish physicist George Francis FitzGerald (1851-1901), who independently proposed such a contraction. See more at relativity.
The American Heritage® Science Dictionary