We found 31 dictionaries that define the word pollutant:

General (21 matching dictionaries)

1. pollutant: Longman Dictionary of Contemporary English
2. pollutant: Merriam-Webster
3. pollutant: Oxford Learner's Dictionaries
4. pollutant: American Heritage Dictionary of the English Language
5. pollutant: Collins English Dictionary
6. pollutant: Vocabulary.com
7. Pollutant, pollutant: Wordnik
8. pollutant: Cambridge Advanced Learner's Dictionary
9. pollutant: Wiktionary
10. pollutant: Webster's New World College Dictionary, 4th Ed.
11. pollutant: The Wordsmyth English Dictionary-Thesaurus
12. pollutant: Infoplease Dictionary
13. pollutant: Dictionary.com
14. pollutant: Cambridge Essential American English Dictionary
15. Pollutant: Wikipedia, the Free Encyclopedia
16. pollutant: Rhymezone
17. pollutant: FreeDictionary.org
18. pollutant: Mnemonic Dictionary
19. pollutant: TheFreeDictionary.com

Business (2 matching dictionaries)

20. pollutant: Legal dictionary
21. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

22. pollutant: Encyclopedia

Medicine (3 matching dictionaries)

23. pollutant: Merriam-Webster Medical Dictionary
24. online medical dictionary (No longer online)
25. pollutant: Medical dictionary

Tech (4 matching dictionaries)

26. AUTOMOTIVE TERMS (No longer online)
27. Glossary of Meteorology (No longer online)
28. Lake and Water Word Glossary (No longer online)
29. National Weather Service Glossary (No longer online)

(Note: See pollutants as well.)

Definitions from Wiktionary ( ) ▸ noun:  A foreign substance that makes something dirty, or impure, especially waste from human activities. Similar: contaminant, pollution, impuration, contamination, dirt, foreign body, befoulment, filth, adulterant, dirtying, more... Opposite: purifier, cleanser, decontaminant, disinfectant, clarifier Types: carbon dioxide, sulfur dioxide, nitrogen oxide, ozone, hydrocarbons, particulate matter, more... Phrases: air pollutant, water pollutant, criteria pollutant, secondary pollutant, primary pollutant, more... Adjectives: major, environmental, particular, toxic, hazardous, specific, secondary, common, single, primary, important Colors:     gray,     brown,     black,     dark green,     dull orange, more... ▸ Words similar to pollutant ▸ Usage examples for pollutant ▸ Idioms related to pollutant ▸ Wikipedia articles (New!) ▸ Popular adjectives describing pollutant ▸ Words that often appear near pollutant ▸ Rhymes of pollutant ▸ Invented words related to pollutant