di·men·sion (d -m n sh n, d -)n. 1. A measure of spatial extent, especially width, height, or length. 2. Extent or magnitude; scope. Often used in the plural: 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, length, time, or a combination thereof, regarded as a fundamental measure or as one of a set of fundamental measures of a physical quantity: Velocity has the dimensions of length divided by time. 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 d m nsi , dmnsin-, extent, from dmnsus, past participle of dmtr, to measure out : d-, dis-, dis- + mtr, to measure; see m-2 in Indo-European roots.]di·men sion·al adj.di·men  sion·ali·ty (-sh-n l-t) n.di·men sion·al·ly adv.di·men sion·less adj. |
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