one-dimensional

Adjective

• of or in or along or relating to a line; involving a single dimension
  • a linear measurement
    

• 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
    

Related words

• Synonyms: 
  linear , unidimensional
• Antonyms: 
  planar , two-dimensional , cubic , three-dimensional , multidimensional