We found 21 dictionaries that define the word air pollution:

General (10 matching dictionaries)

1. air pollution: Oxford Learner's Dictionaries
2. air pollution: Vocabulary.com
3. air-pollution: Wordnik
4. air pollution: Wiktionary
5. air pollution: Dictionary.com
6. Air-pollution, Air pollution: Wikipedia, the Free Encyclopedia
7. air pollution: Rhymezone
8. air pollution: FreeDictionary.org
9. air pollution: Mnemonic Dictionary
10. air pollution: TheFreeDictionary.com

Business (2 matching dictionaries)

11. Air-pollution, air pollution: Legal dictionary
12. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

13. Air-pollution, air pollution: Encyclopedia

Medicine (1 matching dictionary)

14. Air-pollution, air pollution: Medical dictionary

Miscellaneous (1 matching dictionary)

15. CIA World Factbook (No longer online)

Tech (6 matching dictionaries)

16. Air Pollution: Glossary of Air Pollution Terms
17. AUTOMOTIVE TERMS (No longer online)
18. Glossary of Meteorology (No longer online)
19. Glossary of Agricultural Terms, Programs and Laws (No longer online)
20. Lake and Water Word Glossary (No longer online)
21. Glossary of Energy Terms (No longer online)

(Note: See air_pollutions as well.)

Definitions from Wiktionary (air pollution) ▸ noun:  The contamination of the atmosphere by noxious gases and particulates. Similar: off-gassing, soil pollution, brown cloud, fugitive dust, venting, offgassing, abioseston, xenosphere, summer smog, whitedamp, more... Opposite: cleair, air quality, air purity, air cleanliness Types: particulate matter, ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide, lead, more... Phrases: industrial air pollution, air pollution control, indoor air pollution, outdoor air pollution, urban air pollution, more... Adjectives: cracking, lube, lubricating, crude, lubed, wax, salt, saponifiable, cindery, colly, gas ▸ Words similar to air pollution ▸ Usage examples for air pollution ▸ Idioms related to air pollution ▸ Wikipedia articles (New!) ▸ Words that often appear near air pollution ▸ Rhymes of air pollution ▸ Invented words related to air pollution