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.
Gravity is the story of space-time, and Hawking spent many years investigating the deep relationship between space, time and quantum mechanics. Paul Sutter, Space.com, 19 Mar. 2025 In the Marvel Cinematic Universe, interwoven films and limited series spin tales of epic heroes built from dust, battles waged for love, and villainous origins that span decades, planets, and even the space-time continuum. Ct Jones, Rolling Stone, 19 Mar. 2025 The authors shed light on the ways black holes are studied today and their profound impacts on space-time, and ponder their origins, their evolution, and their roles at the beginning and the end of the universe. Brian Handwerk, Smithsonian Magazine, 7 Mar. 2025 Fixes an issue where specific operations could occasionally cause failures when traversing between different space-times. Ross Rosenfeld, Newsweek, 26 Feb. 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

Browse Nearby Words

Cite this Entry

“Space-time.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/space-time. Accessed 24 Mar. 2025.

More from Merriam-Webster on space-time

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!