We found 33 dictionaries that define the word rainfall:

General (25 matching dictionaries)

1. rainfall: Longman Dictionary of Contemporary English
2. rainfall: Merriam-Webster
3. rainfall: Oxford Learner's Dictionaries
4. rainfall: American Heritage Dictionary of the English Language
5. rainfall: Collins English Dictionary
6. rainfall: Vocabulary.com
7. Rainfall, rainfall: Wordnik
8. rainfall: Cambridge Advanced Learner's Dictionary
9. rainfall: Wiktionary
10. rainfall: Webster's New World College Dictionary, 4th Ed.
11. rainfall: The Wordsmyth English Dictionary-Thesaurus
12. rainfall: Infoplease Dictionary
13. rainfall: Dictionary.com
14. rainfall: Cambridge Essential American English Dictionary
15. Rainfall: Wikipedia, the Free Encyclopedia
16. Rainfall: Online Plain Text English Dictionary
17. rainfall: Webster's Revised Unabridged, 1913 Edition
18. rainfall: Rhymezone
19. Rainfall: AllWords.com Multi-Lingual Dictionary
20. rainfall: FreeDictionary.org
21. rainfall: The Phrontistery - A Dictionary of Obscure Words
22. rainfall: Mnemonic Dictionary
23. rainfall, rainfall (nuclear): TheFreeDictionary.com

Computing (1 matching dictionary)

24. rainfall: Encyclopedia

Science (1 matching dictionary)

25. Rainfall: Eric Weisstein's World of Astronomy

Slang (1 matching dictionary)

26. Rainfall: Urban Dictionary

Tech (5 matching dictionaries)

27. DOD Dictionary of Military Terms (No longer online)
28. Glossary of Meteorology (No longer online)
29. Lake and Water Word Glossary (No longer online)
30. National Weather Service Glossary (No longer online)
31. Rainfall: Science In Your Watershed: Hydrologic Definitions

(Note: See rainfalls as well.)

Definitions from Wiktionary ( ) ▸ noun:  (meteorology) The amount of rain that falls on a single occasion ▸ noun:  The occurrence of liquid precipitation, the fall of rain. Similar: rain, rainpour, rainwater, rainstorm, Rainer, rainy season, rainband, rainshower, ring rain, rainlight, more... Opposite: drought, dryness, aridity, desiccation, sunshine Types: drizzle, light rain, moderate rain, heavy rain, torrential rain, freezing rain, sleet, snow, more... Phrases: rainfall intensity, rainfall rate, effective rainfall, excessive rainfall, rainfall regime, more... Adjectives: annual, heavy, average, low, high, mean, total, abundant, normal, monthly, excessive Colors:     gray,     blue,     dark blue,     light blue,     teal, more... ▸ Words similar to rainfall ▸ Usage examples for rainfall ▸ Idioms related to rainfall ▸ Wikipedia articles (New!) ▸ Popular adjectives describing rainfall ▸ Words that often appear near rainfall ▸ Rhymes of rainfall ▸ Invented words related to rainfall