[ too-di-men-shuh-nl, -dahy- ]

  1. having the dimensions of height and width only: a two-dimensional surface.

  2. (of a work of art) having its elements organized in terms of a flat surface, especially emphasizing the vertical and horizontal character of the picture plane: the two-dimensional structure of a painting.

  1. (in a literary work) shallow, unconvincing, or superficial in execution: a novel having two-dimensional characters.

Origin of two-dimensional

First recorded in 1895–1900

Other words from two-dimensional

  • two-di·men·sion·al·i·ty, noun
  • two-di·men·sion·al·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for two-dimensional


  1. of, having, or relating to two dimensions, usually describable in terms of length and breadth or length and height

  2. lying on a plane; having an area but not enclosing any volume

  1. lacking in depth, as characters in a literary work

  2. (of painting or drawing) lacking the characteristics of form or depth

Derived forms of two-dimensional

  • two-dimensionality, noun
  • two-dimensionally, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012