fourth dimension

(redirected from 4-space)
Also found in: Thesaurus, Encyclopedia.

fourth dimension

n.
Time regarded as a coordinate dimension and required by relativity theory, along with three spatial dimensions, to specify completely the location of any event.

fourth dimension

n
1. (General Physics) the dimension of time, which is necessary in addition to three spatial dimensions to specify fully the position and behaviour of a point or particle
2. (Literary & Literary Critical Terms) the concept in science fiction of a dimension in addition to three spatial dimensions, used to explain supernatural phenomena, events, etc
ˌfourth-diˈmensional adj

fourth′ dimen′sion


n.
1. a dimension, usu. time, in addition to length, width, and depth, used to discuss phenomena that depend on four variables in geometrical language.
2. something beyond scientific explanation.
[1870–75]
fourth′-di•men′sion•al, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.fourth dimension - the fourth coordinate that is required (along with three spatial dimensions) to specify a physical event
dimension - the magnitude of something in a particular direction (especially length or width or height)
Translations

fourth dimension

n the fourth dimensionla quarta dimensione
References in periodicals archive ?
It corresponds to an extreme Einstein--Friedmann universe model of zero energy density (an empty universe), which extrapolates the linear Hubble expansion law from Planck unit length to infinity in the flat Minkowski 4-space.
Recall that all known finite generalized quadrangles except the Hermitian quadrangles in projective 4-space have the property that up to a combination of duality and Payne-integration, they are STGQs.
Planar patterns with fivefold symmetry as sections of periodic structures in 4-space.
Complete classification of quasi-minimal surfaces with parallel mean curvature vector in neutral pseudo-Euclidean 4-space [E.
This is--in contrast to the Lorentz transformation--not a rotation in 4-space but a linear transformation (stretching) with a translation.