We found 12 dictionaries that define the word air-conditioning:

General (9 matching dictionaries)

1. air-conditioning: Merriam-Webster
2. air-conditioning, air-conditioning: Collins English Dictionary
3. air-conditioning: Vocabulary.com
4. Air-Conditioning, Air-conditioning, air-conditioning: Wordnik
5. air-conditioning: Wiktionary
6. air-conditioning: Dictionary.com
7. Air-conditioning: Wikipedia, the Free Encyclopedia
8. air-conditioning: AllWords.com Multi-Lingual Dictionary
9. air-conditioning: TheFreeDictionary.com

Art (1 matching dictionary)

10. English-Chinese Dictionary of Graphic Communications (Big 5) (No longer online)

Computing (1 matching dictionary)

11. air-conditioning: Encyclopedia

Tech (1 matching dictionary)

12. AUTOMOTIVE TERMS (No longer online)

(Note: See air-condition as well.)

Definitions from Wiktionary (Air-conditioning) ▸ noun:  (UK) Alternative spelling of air conditioning [The state of temperature and humidity produced by an air conditioner.] Similar: air-conditioner, aircon, A.C., adj., e-mail, datacentre, data center, wordprocessing, datacenter, acknowledgement, more... Opposite: heating, warming, heating system Phrases: air-conditioning system, more... ▸ Words similar to air-conditioning ▸ Usage examples for air-conditioning ▸ Idioms related to air-conditioning ▸ Wikipedia articles (New!) ▸ Popular adjectives describing air-conditioning ▸ Words that often appear near air-conditioning ▸ Rhymes of air-conditioning ▸ Invented words related to air-conditioning