Longman Dictionary of Contemporary English
Wiktionary
n. 1 (context algebraic geometry English) The fourth coordinate indicating a position along the fourth axis. 2 (context physics English) The dimension of time.
WordNet
n. the fourth coordinate that is required (along with three spatial dimensions) to specify a physical event [syn: time]
Wikipedia
Fourth dimension may refer to:
Fourth Dimension was a 1973 library recordings release by BBC Radiophonic Workshop composer Paddy Kingsland. Although it was credited to "The BBC Radiophonic Workshop" it was the work of Kingsland alone, and was the first album of Workshop music to feature only one artist. It features theme tunes that were used by a number of BBC radio and TV stations. The music prominently features VCS 3 and "Delaware" Synthi 100 synthesisers, both from Electronic Music Studios (London) Ltd, with a standard rock-based session band providing backing. The track "Reg" featured as the B-side to the 1973 single release of the Doctor Who theme.
Fourth Dimension is the fourth studio album by power metal band Stratovarius, released on 11 April 1995 through Noise Records. The album is the band's first to feature vocalist Timo Kotipelto as well as the last with keyboardist Antti Ikonen and drummer Tuomo Lassila, thus being the last Stratovarius album to date featuring an all-Finnish line-up. Founding member and guitarist Timo Tolkki, who had served as the band's vocalist for their first three albums, still provided background vocals on Fourth Dimension before handing over lead singing duties to Kotipelto for all subsequent albums.
Usage examples of "fourth dimension".
At a guess, I would have said that the fourth dimension would be something more colorous and complex and varied-a land of multifold hues and many-angled forms.
To a four-spacer, the room would be wide open in the direction of the fourth dimension.
What therefore more easy than now to take his servant on a second journey into the blessed region of the Fourth Dimension, where I shall look down with him once more upon this land of Three Dimensions, and see the inside of every three- dimensioned house, the secrets of the solid earth, the treasures of the mines in Spaceland, and the intestines of every solid living creature, even of the noble and adorable Spheres.
The notion of time as a fourth dimension was becoming common scientific currency in the late Victorian era.
Then, I could imagine the fourth dimension, time, as being like an infinite number of strings, lying one beside another.
Perhaps through another continuum of space-time, through what you might call, for the want of a better term, the fourth dimension.