fourth dimension

noun

1

: a dimension in addition to length, breadth, and depth

specifically : a coordinate in addition to three rectangular coordinates especially when interpreted as the time coordinate in a space-time continuum

2

: something outside the range of ordinary experience

fourth-dimensional adjective

Examples of fourth dimension in a Sentence

Recent Examples on the Web

Central to the installation is the artist’s playful reference to the Tesseract Cube: a calculation used in physics to go beyond matter into the fourth dimension. —Joanne Shurvell, Forbes.com, 5 June 2025

Marclay’s deconstruction and reconstruction of time does not reduce to a coherent theory of the fourth dimension. —Jonathon Keats, Forbes.com, 28 Mar. 2025

The fourth dimension coaster features seats that rotate 360 degrees forward and backward as the ride reaches a top speed of 76 mph over a track layout with multiple inversions. —Brady MacDonald, Orange County Register, 19 Mar. 2025

The Well This is what the fourth dimension looks like Left–Right, Back–Forth, Up–Down. —Big Think, 24 June 2024

Word History

First Known Use

1875, in the meaning defined at sense 1

Rhymes for fourth dimension

• apprehension
• comprehension
• condescension
• hypertension
• hypotension
• reinvention
• reprehension
• resuspension
• attention
• contention
• convention
• declension