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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Scientists in Wales have built the world’s most sensitive table-top interferometer, which is a miniature, ultra-precise instrument capable of measuring distortions in space-time smaller than a trillionth of a human hair. Georgina Jedikovska, Interesting Engineering, 10 Oct. 2025 Peering into deep space, NASA's James Webb Space Telescope has helped astronomers find places to study gravitational lensing, an effect in which massive objects such as galaxies warp space-time itself, bending and distorting the light of even more distant galaxies behind them. Kenna Hughes-Castleberry, Space.com, 10 Oct. 2025 The story is about a technologically superior faction obsessed with developing a single, revolutionary new weapon, a complex space-time bender. Marco Argenti, Time, 2 Oct. 2025 The researchers were able to glean more information about the event by analyzing the gravitational waves – distortions in space-time caused by powerful cosmic events – produced as the black hole bounced away from the site of its parents' rendezvous. Eric Lagatta, USA Today, 16 Sep. 2025 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 12 Oct. 2025.

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