a line in space-time comprising the successive points occupied by a particle, celestial object, etc., throughout its history; also in extended use.
| 单词 | θ80085 | 
| 释义 | the world > matter > physics > relativity > space-time > 			[noun]		 > point in > succession occupied by particle (1)		 world line1914 a line in space-time comprising the successive points occupied by a particle, celestial object, etc., throughout its history; also in extended use.  | 
	
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