Word.ws English Dictionary

four color theorem

four color theorem proper noun: a theorem stating that given any separation of a plane into contiguous regions, producing a figure called a map, no more than four colors are required to color the regions so that no two adjacent regions have the same color (adjacent being defined as two regions sharing a boundary, not counting corners, in which three or more regions share a boundary).

four color theorem: a theorem stating that given any separation of a plane into contiguous regions, producing a figure...
Image: Inductiveload, CC BY-SA 3.0, via Wikimedia Commons

Proper noun

the four color theorem

  1. A theorem stating that given any separation of a plane into contiguous regions, producing a figure called a map, no more than four colors are required to color the regions so that no two adjacent regions have the same color (adjacent being defined as two regions sharing a boundary, not counting corners, in which three or more regions share a boundary).

Questions about four color theorem

What does four color theorem mean?
Four color theorem means a theorem stating that given any separation of a plane into contiguous regions, producing a figure called a map, no more than four colors are required to color the regions so that no two adjacent regions have the same color (adjacent being defined as two regions sharing a boundary, not counting corners, in which three or more regions share a boundary).
What part of speech is four color theorem?
Four color theorem is a proper noun.

Words near four color theorem in the dictionary

  1. four by two
  2. four by twos
  3. Four Classic Novels
  4. four color
  5. four color problem
  6. four color theorem
  7. four colors
  8. four corners
  9. Four Corners virus
  10. Four Crosses
  11. four door house

Source and license

Adapted from Wiktionary: four color theorem (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “four color theorem.” Word.ws, https://word.ws/four_color_theorem. Based on Wiktionary, CC BY-SA 4.0.