1. relating to a single dimension or aspect; having no depth or scope - "a prose statement of fact is unidimensional, its value being measured wholly in terms of its truth"- Mary Sheehan - a novel with one-dimensional characters • Syn: unidimensional • Ant: multidimensional (for: unidimensional) 2. of or in or along or relating to a line; involving a single dimension - a linear measurement • Syn: linear • Ant: planar (for: linear), cubic (for: linear) • Similar to: collinear, lineal, linelike, rectilinear, rectilineal