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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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 The Socks Are Inside Other Clothes Did the sock actually enter another space-time continuum—or did it get wadded up in someone's pant leg? Katie Cloyd, Martha Stewart, 5 Jan. 2026 So does McGilchrist, who may have used the same source to, in a sense, split space-time in two. Christian Wiman, Harpers Magazine, 30 Dec. 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 16 Feb. 2026.

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