How to Use four-dimensional in a Sentence

four-dimensional

adjective
  • General relativity suggests that objects with mass cause the very fabric of spacetime (the four-dimensional unification of space and time) to warp.
    — Robert Lea, Space.com, 2 Mar. 2026
  • General relativity suggests that objects with mass cause spacetime (the four-dimensional unification of space and time) to warp.
    — Robert Lea, Space.com, 1 June 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
  • For the project, the group simulated hundreds of snapshots of four-dimensional (4D) spacetime with lattice quantum chromodynamics.
    — Georgina Jedikovska, Interesting Engineering, 12 June 2026
  • Yet Albert Einstein’s theories of special and general relativity reveal that space and time are linked into a four-dimensional metric called spacetime.
    — Big Think, 20 Aug. 2025
  • What had germinated in marble in Italy was ready to evolve from three-dimensional cubes to four-dimensional information that could visualize some of the project’s possible permutations.
    — Katherine Rochester, Artforum, 1 Apr. 2026
  • General relativity predicts that objects with mass create an actual curvature in the fabric of spacetime, the four-dimensional unification of the three dimensions of space and the one dimension of time.
    — Robert Lea, Space.com, 8 June 2026
  • In his general theory of relativity, Einstein described space-time as a four-dimensional manifold, and gravity as that manifold’s curvature.
    — Quanta Magazine, 3 Nov. 2025
  • Einstein was able, starting in 1915, to successfully describe the observed phenomenon of gravitation as a consequence of the curvature of our four-dimensional spacetime.
    — Ethan Siegel, Big Think, 9 Sep. 2025
  • Its four-dimensional LiDAR even measures instantaneous velocity, allowing vehicles and robots to make safer, smarter decisions.
    — Ni Tao, Interesting Engineering, 15 Sep. 2025
  • Many mathematicians suspected that the next polynomial to be classified — degree-3 equations with five variables (forming four-dimensional manifolds known as four-folds) — wouldn’t usually be parameterizable either.
    — Joseph Howlett, Quanta Magazine, 12 Dec. 2025
  • Of course, in 1915, Newton's theory of gravity was supplanted by Einstein's geometric theory of gravity, general relativity, which sees this fundamental force arise from the curvature of the fabric of spacetime (the four-dimensional unification of space and time) caused by objects with mass.
    — Robert Lea, Space.com, 27 May 2026

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'four-dimensional.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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