Source : Webster's Revised Unabridged Dictionary (1913)

Unidimensional \Un`i*di*men"sion*al\, a. [Uni- + dimensional.]
   (Math.)
   Having but one dimension. See {Dimension}.

Source : WordNet®

unidimensional
     adj : 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: {one-dimensional}] [ant: {multidimensional}]