We found 11 dictionaries that define the word primary colours:

General (8 matching dictionaries)

1. primary colours: Collins English Dictionary
2. primary colours: Vocabulary.com
3. primary colours: Cambridge Advanced Learner's Dictionary
4. primary colours: Wiktionary
5. primary colours: Dictionary.com
6. Primary Colours (Magic! album), Primary Colours (The Horrors album), Primary colours (album), Primary colours: Wikipedia, the Free Encyclopedia
7. Primary Colours: Dictionary of Phrase and Fable (1898)
8. Primary colours: TheFreeDictionary.com

Art (2 matching dictionaries)

9. English-Chinese Dictionary of Graphic Communications (Big 5) (No longer online)
10. Technical Glossary of Theatre Terms (No longer online)

Slang (1 matching dictionary)

11. Primary Colours: Urban Dictionary

▸ Words similar to primary colours ▸ Usage examples for primary colours ▸ Idioms related to primary colours ▸ Wikipedia articles (New!) ▸ Words that often appear near primary colours ▸ Rhymes of primary colours ▸ Invented words related to primary colours