Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “the fourth dimension”

the fourth dimension

noun [S] uk   us  
refers to time, especially in science fictionRelating to time
(Definition of the fourth dimension from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of the fourth dimension?
Add Cambridge dictionaries to your browser to your website

Translations of “the fourth dimension”

Word of the Day


the skill with which something was made or done

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More