From Longman Dictionary of Contemporary Englishfourth dimensionˌfourth diˈmension noun → the fourth dimension
Examples from the Corpus
fourth dimension• To change to a left handed helix it must pass through a fourth dimension.• The manifesto was many things to many artists and tended to seek a compromise among the various concepts of the fourth dimension.• The pursuit of the fourth dimension through art was highly fashionable in the first half of the twentieth century.• More generally still, the fourth dimension came to be equated with something that our eyes are incapable of seeing.• The fourth dimension also played a part in uniting a number of abstract painters and sculptors in the inter-war period. 