Also found in: Thesaurus, Medical, Legal, Idioms, Encyclopedia, Wikipedia.


 (dĭ-mĕn′shən, dī-)
1. A measure of spatial extent, especially width, height, or length.
2. often dimensions Extent or magnitude; scope: a problem of alarming dimensions.
3. Aspect; element: "He's a good newsman, and he has that extra dimension" (William S. Paley).
4. Mathematics
a. The least number of independent coordinates required to specify uniquely the points in a space.
b. The range of such a coordinate.
5. Physics A physical property, such as mass, distance, time, or a combination thereof, regarded as a fundamental measure of a physical quantity: Velocity has the dimension of distance divided by time.
6. A realm of existence, as in a work of fiction, that is physically separate from another such realm: "Although it tells a grounded, political story free from aliens and alternate dimensions, the film remains packed to the brim with iconic ... characters." (Conner Schwerdtfeger).
tr.v. di·men·sioned, di·men·sion·ing, di·men·sions
1. To cut or shape to specified dimensions.
2. To mark with specified dimensions.

[Middle English dimensioun, from Latin dīmēnsiō, dīmēnsiōn-, extent, from dīmēnsus, past participle of dīmētīrī, to measure out : dī-, dis-, dis- + mētīrī, to measure; see mē- in Indo-European roots.]

di·men′sion·al adj.
di·men′sion·al′i·ty (-shə-năl′ĭ-tē) n.
di·men′sion·al·ly adv.
di·men′sion·less adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.dimensionality - the spatial property of having dimensions; "all matter has dimensionality"
spatial property, spatiality - any property relating to or occupying space
linearity, one-dimensionality - the property of having one dimension
flatness, planeness, two-dimensionality - the property of having two dimensions
third-dimensionality, three-dimensionality - the property of having three dimensions
References in classic literature ?
And even as we, who are now in Space, look down on Flatland and see the insides of all things, so of a certainty there is yet above us some higher, purer region, whither thou dost surely purpose to lead me -- O Thou Whom I shall always call, everywhere and in all Dimensions, my Priest, Philosopher, and Friend -- some yet more spacious Space, some more dimensionable Dimensionality, from the vantage-ground of which we shall look down together upon the revealed insides of Solid things, and where thine own intestines, and those of thy kindred Spheres, will lie exposed to the view of the poor wandering exile from Flatland, to whom so much has already been vouchsafed.
The Feature Selection is used to avoid dimensionality curse.
According to Inventergy, Approach Me's technology adds new dimensionality and security to enable mobile app users' enhanced location-based capabilities in solving the deficiencies of conventional map-based navigation systems.
However, the feature dimensionality is still high and the time-consuming of feature extraction is relatively large because the optimal selection is not performed for 2D Gabor filters.
In sections on structure and dimensionality, properties, and case studies, they discuss such matters as nanosystems of one and two dimension, melting and phase transitions, mechanical and thermal properties of inorganic nanostructures, heterogeneous catalysis: vanadia-supported catalysts for selective oxidation reactions, and cosmic and atmospheric nanosilicates.
Depth Image also offered strong colour switching and a greater sense of three dimensionality, all of which enabled greater intuitive verification by the public which increased security at the front line.
Therefore, in this paper we present a Data Mining system that employs a Random Forest (RF) based dissimilarity measure in the dimensionality reduction technique t-Distributed Stochastic Neighbor Embedding (t-SNE) to automatically identify and visualize different types of vehicle usage by applying these methods to aggregated logged on-board data, i.
In 1984, Johnson and Lindenstrauss [14] used the projection generated by a random orthogonal matrix to reduce the dimensionality of data.
The important issue, especially for the high dimensional dataset is dimensionality reduction.
For a new collaboration with Prada, he experimented with adding dimensionality to the brand's store windows.
Keywords: machine learning, curse of dimensionality, hubness
I liked the three dimensionality and I liked the idea of choosing the different elements, different materials and combining them together.