Definition of dimension
1a mathematics (1) : measure in one direction the dimensions of the room; specifically : one of three coordinates (see ^{3}coordinate 1a) determining a position in space or four coordinates determining a position in space and time (2) : one of a group of properties whose number is necessary and sufficient to determine uniquely each element of a system of usually mathematical entities (such as an aggregate of points in real or abstract space) the surface of a sphere has two dimensions; also : a parameter (see parameter 1) or coordinate variable assigned to such a property the three dimensions of momentum (3) : the number of elements in a basis (see basis 5) of a vector spaceb : the quality of spatial extension : magnitude, size … the town's modest dimensions and leisurely ways … — Jane Shellhasec : a lifelike or realistic quality uses eccentric dialogue to add dimension to her charactersd : the range over which or the degree to which something extends : scope —usually used in plural the vast dimensions of the disastere : one of the elements or factors making up a complete personality or entity : aspect the social and political dimensions of the problem
2 obsolete : bodily form or proportions … my dimensions are as well compact, my mind as generous, and my shape as true … — Shakespeare
3 mathematics : any of the fundamental units (as of mass, length, or time) on which a derived unit is based; also : the power of such a unit
4 : wood or stone cut to pieces of specified size
5 : a level of existence or consciousness … a secular as well as spiritual dimension … — Catherine Bates
Examples of dimension in a sentence
She carefully measured each dimension of the room.
The social dimensions of the problem must also be taken into account.
Origin and Etymology of dimension
Middle English, from AngloFrench, from Latin dimension, dimensio, from dimetiri to measure out, from dis + metiri to measure — more at measure
First Known Use: 14th century
Other Mathematics and Statistics Terms
dimension
Definition of dimension
dimensioned
;dimensioning
play \ˈmen(t)shəniŋ\transitive verb
1 : to form to the required dimensions (see ^{1}dimension 1a(1)) a table dimensioned to fit the space
2 : to indicate the dimensions of (as on a drawing) dimensioning the plans
Origin and Etymology of dimension
see ^{1}dimension
First Known Use: 1754
DIMENSION Defined for English Language Learners
Definition of dimension for English Language Learners

: the length, width, height, or depth of something : a measurement in one direction (such as the distance from the ceiling to the floor in a room)

: the amount or number of things that something affects or influences

: a part of something
DIMENSION Defined for Kids
dimension
playDefinition of dimension for Students
: the length, width, or height of something
Medical Dictionary
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Thesaurus: All synonyms and antonyms for dimension Spanish Central: Translation of dimension Nglish: Translation of dimension for Spanish speakers Britannica English: Translation of dimension for Arabic speakers Britannica.com: Encyclopedia article about dimension
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