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Discover LudwigThe phrase "fourth dimension" is grammatically correct and can be used in written English.
It refers to a theoretical dimension beyond the three dimensions of length, width, and height. Example: "The concept of time as the fourth dimension has been explored in numerous scientific theories and works of fiction."
Dictionary
fourth dimension
noun
The fourth coordinate indicating a position along the fourth axis.
synonyms
Exact(53)
C. In the fourth dimension.
I was rocketed to the fourth dimension.
Second, there is the fourth dimension: time.
Movement is the fourth dimension in art.
Culture is the fourth dimension of British power.
The waves make for a fourth dimension of balance.
Similar(7)
"The third dimension is him.
Height-finding radars add the third dimension.
The third dimension lends the characters palpability.
Black holes, relativity, singularity, the fifth dimension!
The third dimension is state.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com