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worldline

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Physics.
  1. (in relativity) the path of a particle in space-time.
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Origin of worldline

First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for world-line

Historical Examples

  • The time dimension and the world-line, he said sharply, excited in spite of himself.

    Astounding Stories of Super-Science January 1931

    Various

  • Revolving in the time dimension means telescoping in the world-line.


British Dictionary definitions for world-line

world-line

noun
  1. physics a line on a space–time path that shows the path of a body
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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