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Dimension, from the latin dimensĭo, is an aspect or facet of something. The concept has several uses depending on the context. It can be a feature, a circumstance or a phase of something or an object.
Examples: "the political dimension of the problem is what worries me", "I think that the honourable Member does not include the Treaty in all its dimensions", "critics have pointed out the political dimension of the film.
The size can also be the size, the scope, area, volume or length of a surface, a body or a line: "At his death, my father left me a large field in the outskirts of the city", "We must buy a new sofa more appropriate to fit the dimensions of the available space in the living room", "the team has never played in a stadium of this size".
The use of the notion of dimension as a measure of space or size may be symbolic: "the Chilean athlete returned home after getting a realization of a size unprecedented in the context of the South American athletics", "the corruption case was a case of huge dimensions for the European policy", "I never imagined an impact of such a dimension.
For physics, the dimensions are the sizes of a set to define a phenomenon. In the universe, three spatial dimensions and one temporal dimension are recognized. A person can go forward / backward; up / down; left / right; or any combination of these three movements.
Means 3D (three dimensional) technology that provides three-dimensional visual information to create an illusion of depth in an image. There is instead of talking about movies in 3D, 3D TV, etc.