dimension

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(də′men·chənz)

(physics) The product of powers of fundamental quantities (or of convenient derived quantities) which are used to define a physical quantity; the fundamental quantities are often mass, length, and time.


Length, mass, time, or combinations of these quantities serving as an indication of the nature of a physical quantity. Quantities with the same dimensions can be expressed in the same units. For example, although speed can be expressed in various units such as miles/hour, feet/second, and meters/second, all these speed units involve the ratio of a length unit to a time unit; hence, the dimensions of speed are the ratio of length L to time T, usually stated as LT−1. The dimensions of all mechanical quantities can be expressed in terms of L, T, and mass M. The validity of algebraic equations involving physical quantities can be tested by a process called dimensional analysis; the terms on the two sides of any valid equation must have the same dimensions. See also Dimensional analysis; Units of measurement.


(1) See dimension table.

(2) One axis in an array. In programming, a dimension statement defines the array and sets up the number of elements within the dimensions.

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IN BRIEF: Magnitude measured in a particular direction, specifically length, breadth, thickness or time.

pronunciation For this reason, the course will seek to explore specific dimensions of world cinema in terms of historical and social contexts of production. — www.yourdictionary.com

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