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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Binary black holes release energy in the form of gravitational waves– ripples in space-time that specialized observatories can detect. Jonathan Zrake, Discover Magazine, 5 Dec. 2024 The mathematical physicist Roger Penrose, who won the Nobel Prize in Physics in 2020, is known in part for his ability to visualize complex mathematical and physical concepts, from the twisting of light rays to the four dimensions of space-time. The New Yorker, 2 Dec. 2024 Last year, observations of the subtle movements of pulsating stars known as a pulsar timing array revealed a background hum of gravitational waves in the universe—ripples in the fabric of space-time. Jonathan O’Callaghan, WIRED, 1 Dec. 2024 Because of its porous, foam-like structure, the sponge has also been used to model shock absorbers and exotic forms of space-time. Quanta Magazine, 26 Nov. 2024 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

Dictionary Entries Near space-time

Cite this Entry

“Space-time.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/space-time. Accessed 18 Dec. 2024.

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