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Noun: worldline
  1. (physics) the one-dimensional spacetime path of a point particle, describing how the position evolves with time

Derived forms: worldlines

Encyclopedia: Worldline

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world war
World War 1
World War 2
World War I
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World Wide Web
world-beater
world-beating
world-class
world-famous
worldline
worldliness
worldling
worldly
worldly belongings
worldly concern
worldly good
worldly goods
worldly possession
worldly possessions
worldly-minded