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, 04:47, 24 March 2022
{{for|the municipality in Norway|Category:Time, Norway}}
{{Commons category|Time}}
'''Time''' is a [[Measurement|measure]] of duration. It can mark [[:wikt:change|change]] by [[operational definition]], or by other [[clock|technologies]]. By the 20th century, [[Albert Einstein]] came to regard '''time''' as a fourth [[dimension]], along with [[space]], within a [[spacetime]].
{{Cat main|Time}}
{{catseealso|Categories by time}}
[[Category:Dimension]]
[[Category:Concepts in metaphysics]]
[[Category:Physical quantities]]
[[Category:Spacetime]]
[[Category:Main topic classifications]]