Usually means: Minimum colors needed for graph.
Definitions Related words Mentions
We found 10 dictionaries that define the word chromatic number:

General (3 matching dictionaries)
  1. chromatic number: Wiktionary
  2. chromatic number: Dictionary.com
  3. Chromatic number: Wikipedia, the Free Encyclopedia

Computing (3 matching dictionaries)
  1. chromatic number: Free On-line Dictionary of Computing
  2. chromatic number: Dictionary of Algorithms and Data Structures
  3. chromatic number: Encyclopedia

Medicine (1 matching dictionary)
  1. online medical dictionary (No longer online)

Science (3 matching dictionaries)
  1. Chromatic Number: Eric Weisstein's World of Mathematics
  2. chromatic number: PlanetMath Encyclopedia
  3. chromatic number: Graph Theory

Definitions from Wiktionary (chromatic number)

noun:  (graph theory) The smallest number of colours needed to colour a given graph (i.e., to assign a colour to each vertex such that no two vertices connected by an edge have the same colour).

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