We found 46 dictionaries that define the word irrigation:

General (22 matching dictionaries)

1. irrigation: Merriam-Webster
2. irrigation: Oxford Learner's Dictionaries
3. irrigation: Collins English Dictionary
4. irrigation: Vocabulary.com
5. Irrigation, irrigation: Wordnik
6. irrigation: Cambridge Advanced Learner's Dictionary
7. irrigation: Wiktionary
8. irrigation: The Wordsmyth English Dictionary-Thesaurus
9. irrigation: Infoplease Dictionary
10. irrigation: Dictionary.com
11. irrigation: Cambridge Essential American English Dictionary
12. Irrigation (disambiguation), Irrigation (vine), Irrigation: Wikipedia, the Free Encyclopedia
13. Irrigation: Online Plain Text English Dictionary
14. irrigation: Webster's Revised Unabridged, 1913 Edition
15. irrigation: Rhymezone
16. Irrigation: AllWords.com Multi-Lingual Dictionary
17. irrigation: Webster's 1828 Dictionary
18. irrigation: FreeDictionary.org
19. irrigation: Mnemonic Dictionary
20. irrigation: TheFreeDictionary.com

Business (2 matching dictionaries)

21. Bouvier's Law Dictionary 1856 Edition (No longer online)
22. Irrigation (agriculture), Irrigation: Legal dictionary

Computing (1 matching dictionary)

23. Irrigation (agriculture), irrigation: Encyclopedia

Medicine (9 matching dictionaries)

24. irrigation: Merriam-Webster Medical Dictionary
25. Dorland's Illustrated Medical Dictionary (No longer online)
26. Orthodontic Terms (No longer online)
27. Medical Dictionary (No longer online)
28. Digestive Diseases Dictionary (No longer online)
29. online medical dictionary (No longer online)
30. Hepatitis C Information Central (No longer online)
31. Irrigation (agriculture), irrigation: Medical dictionary
32. Hyperdictionary (No longer online)

Religion (1 matching dictionary)

33. Irrigation: Easton Bible

Science (2 matching dictionaries)

34. Agricultural Thesaurus and Glossary (No longer online)
35. Botanical Terms (No longer online)

Slang (1 matching dictionary)

36. irrigation: Green’s Dictionary of Slang

Tech (8 matching dictionaries)

37. Glossary of Meteorology (No longer online)
38. Glossary of Agricultural Terms, Programs and Laws (No longer online)
39. irrigation: Canadian Soil Information System
40. Lake and Water Word Glossary (No longer online)
41. Irrigation: Construction Glossary
42. National Weather Service Glossary (No longer online)
43. Irrigation: Science In Your Watershed: Hydrologic Definitions
44. Water-Science Glossary of Terms (No longer online)

(Note: See irrigate as well.)

Definitions from Wiktionary (irrigation) ▸ noun:  The act or process of irrigating, or the state of being irrigated; especially, the operation of causing water to flow over lands, for nourishing plants. Similar: irrigational, drainage, microirrigation, fertigation, subirrigation, agricultural, agriculture, irrigator, salination, irrigable, more... Opposite: drought, dehydration, aridity, desiccation, dryness Types: drip irrigation, flood irrigation, manual irrigation, gravity irrigation, pressure irrigation, canal irrigation, more... Phrases: irrigation water, irrigation systems, irrigation system, irrigation ditches, irrigation district, more... Adjectives: artificial, minor, continuous, well, perennial, scale, copious, extensive, supplemental, frequent, agricultural Colors:     green,     blue,     aqua,     teal,     turquoise, more... ▸ Words similar to irrigation ▸ Usage examples for irrigation ▸ Idioms related to irrigation ▸ Wikipedia articles (New!) ▸ Popular adjectives describing irrigation ▸ Words that often appear near irrigation ▸ Rhymes of irrigation ▸ Invented words related to irrigation