dimension, in common parlance, the measure of the size of an object, such as a box, usually given as length, width, and height. In mathematics, the notion of dimension is an extension of the idea that a line is one-dimensional, a plane is two-dimensional, and space is three-dimensional.

What is dimension used for?

In mathematics and science, dimension is used in describing spatial concepts such as points, lines, and solids.

What is dimension and its uses?

We quantify the size and shape of things using Dimensional Analysis. It helps us study the nature of objects mathematically. ... The basic concept of dimension is that we can add and subtract only those quantities that have the same dimensions. Similarly, two physical quantities are equal if they have the same dimensions.