dimension UK /daɪˈmɛn.ʃən/US /dɪˈmɛn.ʃən/noun 8verb 2forms 3 noun8 •the size of something in one direction, such as how long, wide or deep it isHowever, tubes of the same dimensions also look like solid cylinders, because their ovals are automatically treated as the top or bottom faces of solids. — 1985 •A single aspect of a given thing.This film can be enjoyed on many dimensions - the script is great, the acting is realistic, and the special effects will simply take you aback. •A construct whereby objects or individuals can be distinguished. •A universe or plane of existence.a machine that lets you travel to a parallel dimension. •The number of independent coordinates needed to specify uniquely the location of a point in a space; also, any of such independent coordinates. •The number of elements of any basis of a vector space. •One of the physical properties that are regarded as fundamental measures of a physical quantity, such as mass, length and time.The dimension of velocity is length divided by time. •Any of the independent ranges of indices in a multidimensional array. verb2 •To mark, cut or shape something to specified dimensions.“The shape seems simple,” Bruce Leep said. “But very precise dimensioning is required. It was difficult to figure out how all of these angles come together.” — 2010 •To specify the size of (an array or similar data structure); to allocate.Dimension an array to hold only as much data as you intend to put into it. — 2002 formsdimensioned · dimensioning · dimensions