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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Having your entire concept of the space-time continuum blown up will do that to a person. Maggie Fremont, Vulture, 26 Mar. 2026 One catch was that these strings must have 10 space-time dimensions to wiggle around in, so string theorists posited that there must be six tiny extra directions curled up at each point in our familiar four-dimensional space-time. Quanta Magazine, 23 Mar. 2026 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 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 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 31 Mar. 2026.

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