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three dimensional vs three-dimensional

Both "three dimensional" and "three-dimensional" are correct, but they are used in different contexts. "Three dimensional" is used when the words are not modifying a noun directly, while "three-dimensional" is used when they are used as a compound adjective before a noun.

Last updated: March 21, 2024 • 835 views

three dimensional

This phrase is correct when the words are not modifying a noun directly.

Use "three dimensional" when the words are not directly modifying a noun. For example, "The movie was shown in three dimensions."

Examples:

  • The movie was shown in three dimensions.
  • She could see the world in three dimensions.
  • He explained the concept in three dimensions.
  • Three-dimensional space is a geometric three-parameter model of the physical universe (without considering time) in which all known matter exists. These three  ...
  • adjective three–di·men·sion·al \ˈthrē-də-ˈmench-nəl, -ˈmen(t)-shə-nəl also -dī-\. Simple Definition of three–dimensional. : having or seeming to have length, ...
  • 2. (especially in a literary work) fully developed: The story came alive chiefly because the characters were vividly three-dimensional. Origin of three- dimensional
  • In computers, 3-D (three dimensions or three-dimensional) describes an image that provides the perception of depth. When 3-D images are made interactive so  ...

Alternatives:

  • in three dimensions
  • with three dimensions
  • having three dimensions
  • three-dimensional space
  • three-dimensional objects

three-dimensional

This phrase is correct when used as a compound adjective before a noun.

Use "three-dimensional" when the words are used together as a compound adjective before a noun. For example, "She bought a three-dimensional puzzle."

Examples:

  • She bought a three-dimensional puzzle.
  • The artist created a three-dimensional sculpture.
  • They explored the three-dimensional world.
  • Three-dimensional space is a geometric three-parameter model of the physical universe (without considering time) in which all known matter exists. These three  ...
  • adjective three–di·men·sion·al \ˈthrē-də-ˈmench-nəl, -ˈmen(t)-shə-nəl also -dī-\. Simple Definition of three–dimensional. : having or seeming to have length, ...
  • 2. (especially in a literary work) fully developed: The story came alive chiefly because the characters were vividly three-dimensional. Origin of three- dimensional
  • In computers, 3-D (three dimensions or three-dimensional) describes an image that provides the perception of depth. When 3-D images are made interactive so  ...

Alternatives:

  • 3D
  • three-D
  • three-dimensional
  • three-dimensionalized
  • three-dimensionalization

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