1 (usually dimensions) a measurable extent of a particular kind, such as length, breadth, depth, or height:the final dimensions of the pond were 14 ft x 8 ft [mass noun]:the drawing must be precise in dimension
a mode of linear extension of which there are three in space and two on a flat surface, which corresponds to one of a set of coordinates specifying the position of a point.
Physics an expression for a derived physical quantity in terms of fundamental quantities such as mass, length, or time, raised to the appropriate power (acceleration, for example, having the dimension of length × time−2).
2an aspect or feature of a situation:we must focus on the cultural dimensions of the problem
cut or shape (something) to particular measurements.
(usually as adjective dimensioned) mark (a diagram) with measurements.