space-time

noun

ˈspās-ˈtīm How to pronounce space-time (audio)
ˈspās-ˌtīm
1
: a system of one temporal and three spatial coordinates by which any physical object or event can be located

called also space-time continuum

2
: the whole or a portion of physical reality determinable by a usually four-dimensional coordinate system
also : the properties characteristic of such an order

Examples of space-time in a Sentence

Recent Examples on the Web
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Giant subterranean sandworms measuring 1,500 feet long; a narcotic that fuels interstellar travel and bends a user’s perception of space-time; a mystical cabal of eugenicist witches—the list goes on. Andrew Paul, Popular Science, 19 Mar. 2026 In particular, Eichhorn has emphasized the importance of taking into account the ways in which matter affects space-time, and vice versa. Quanta Magazine, 11 Mar. 2026 This romantic time-hopping saga tells the century-shifting tales of soulmates Claire and Jaime who bounce across the space-time continuum from continent to continent in a series of increasingly complex genealogical encounters as their love intensifies. Jeff Spry, Space.com, 14 Feb. 2026 On one side stands Albert Einstein’s general relativity, describing smooth, large-scale curvature of space-time. Mrigakshi Dixit, Interesting Engineering, 16 Jan. 2026 See All Example Sentences for space-time

Word History

First Known Use

1910, in the meaning defined at sense 1

Time Traveler
The first known use of space-time was in 1910

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Cite this Entry

“Space-time.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/space-time. Accessed 26 Mar. 2026.

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