dimension

[dih-men-shuhn, dahy-]

noun

1. Mathematics.

   1. a property of space; extension in a given direction.

      A straight line has one dimension, a parallelogram has two dimensions, and a parallelepiped has three dimensions.

   2. the generalization of this property to spaces with curvilinear extension, as the surface of a sphere.

   3. the generalization of this property to vector spaces and to Hilbert space.

   4. the generalization of this property to fractals, which can have dimensions that are noninteger real numbers.

   5. extension in time.

      Space-time has three dimensions of space and one of time.

2. Usually dimensions.

   1. measurement in length, width, and thickness.

   2. scope; importance.

      the dimensions of a problem.

3. an aspect, feature, or angle: We haven't addressed that dimension of the issue.

   A study abroad experience can add a cultural dimension to your language learning.

   We haven't addressed that dimension of the issue.

4. unit.

5. magnitude; size.

   Matter has dimension.

6. Topology.

   1. a magnitude that, independently or in conjunction with other such magnitudes, serves to define the location of an element within a given set, as of a point on a line, an object in a space, or an event in space-time.

   2. the number of elements in a finite basis of a given vector space.

7. Physics.,  any of a set of basic kinds of quantity, as mass, length, and time, in terms of which all other kinds of quantity can be expressed: usually denoted by capital letters, with appropriate exponents, placed in brackets.

   The dimensions of velocity are [LT−1].

8. Also called alternate dimension. (in science fiction, fantasy, etc.) a hypothetical universe or world that is different from our known universe and reachable by traveling in directions that are not the perceptible axes of space and time, as with the use of futuristic technology or magic.

   Your enemies are villains, cultists, terrible monsters, and unfathomable entities from alternate dimensions or the cosmos beyond.

9. Informal.,  dimensions, the measurements of a woman's bust, waist, and hips, in that order.

   The dressmaker noted that the customer's dimensions were 38-24-36.

10. dimension lumber.

verb (used with object)

1. to shape or fashion to the desired dimensions.

   Dimension the shelves so that they fit securely into the cabinet.

2. to indicate the dimensions of an item, area, etc., on (a sketch or drawing).

dimension

/ dɪˈmɛnʃən /

noun

1. (often plural) a measurement of the size of something in a particular direction, such as the length, width, height, or diameter

2. (often plural) scope; size; extent

   a problem of enormous dimensions

3. aspect

   a new dimension to politics

4. maths the number of coordinates required to locate a point in space

5. physics

   1. the product or the quotient of the fundamental physical quantities (such as mass, length, or time) raised to the appropriate power in a derived physical quantity

      the dimensions of velocity are length divided by time

   2. the power to which such a fundamental quantity has to be raised in a derived quantity

verb

1. (tr)

   1. to shape or cut to specified dimensions

   2. to mark with specified dimensions

dimension

1. 1. Any one of the three physical or spatial properties of length, area, and volume. In geometry, a point is said to have zero dimension; a figure having only length, such as a line, has one dimension; a plane or surface, two dimensions; and a figure having volume, three dimensions. The fourth dimension is often said to be time, as in the theory of General Relativity. Higher dimensions can be dealt with mathematically but cannot be represented visually.

   2. The measurement of a length, width, or thickness.

2. A unit, such as mass, time, or charge, associated with a physical quantity and used as the basis for other measurements, such as acceleration.

Other Word Forms

• dimensional adjective
• dimensionality noun
• dimensionally adverb
• dimensionless adjective
• multidimensional adjective
• nondimensioned adjective
• undimensioned adjective

Word History and Origins

Origin of dimension¹

First recorded in 1375–1425; late Middle English dimensioun, from Anglo-French or directly from Latin dīmēnsiōn- (stem of dīmēnsiō ) “a measuring,” equivalent to dīmēns(us) “measured out” (past participle of dīmētīrī, equivalent to dī- di- ² + mētīrī “to measure”) + -iōn- -ion

Word History and Origins

Origin of dimension¹

C14: from Old French, from Latin dīmensiō an extent, from dīmētīrī to measure out, from mētīrī

Example Sentences

Our Chris Smith’s main worry is that his kindly alternate dimension father and brother will find out that he killed his doppelganger in an act of self-defense; Earth X Peacemaker would have murdered him otherwise.

From Salon

The show will pick up in 1953, when "the race to own Birmingham's massive reconstruction project becomes a brutal contest of mythical dimension", the BBC said.

From BBC

Dr Ben Knight, from UWE Bristol's School of Education and Childhood said struggling pupils were "particularly vulnerable to the most troubling dimensions of smartphone use".

From BBC

But, for some, there is another, even more important dimension.

From BBC

“Chuck Schuldiner of Death,” is about the influential death metal singer-guitarist who died from a brain tumor as he sought to bring new dimensions to his music.

From Los Angeles Times

Related Words

• aspect 
• element 
• extent 
• height 
• importance 
• length 
• magnitude 
• proportion 
• quality 
• range 
• scope 
• size 
• thickness