We found 22 dictionaries that define the word flood plain:

General (16 matching dictionaries)

1. flood plain: Collins English Dictionary
2. flood plain: Vocabulary.com
3. flood-plain: Wordnik
4. flood plain: Cambridge Advanced Learner's Dictionary
5. flood plain: Wiktionary
6. flood plain: The Wordsmyth English Dictionary-Thesaurus
7. flood plain: Infoplease Dictionary
8. flood plain: Dictionary.com
9. Flood Plain (painting), Flood-plain, Flood plain: Wikipedia, the Free Encyclopedia
10. flood plain: Rhymezone
11. flood plain: FreeDictionary.org
12. flood plain: Mnemonic Dictionary
13. flood plain: TheFreeDictionary.com
14. flood plain: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

15. flood plain: Financial dictionary

Computing (1 matching dictionary)

16. Flood-plain, flood plain: Encyclopedia

Tech (4 matching dictionaries)

17. Glossary of Meteorology (No longer online)
18. National Weather Service Glossary (No longer online)
19. Flood plain: Science In Your Watershed: Hydrologic Definitions
20. Water-Science Glossary of Terms (No longer online)

(Note: See flood_plains as well.)

Definitions from Wiktionary (Flood plain) ▸ noun:  Alternative form of floodplain [(geography) An alluvial plain adjacent to a river formed by flooding during periods of high rain.] Similar: floodplain, alluvial plain, floodland, floodpool, riverplain, bottomland, palaeoplain, mud flat, peneplane, swampland, more... Opposite: upland, highland, hill, plateau Types: coastal, riverine, lacustrine, glacial, alluvial, piedmont, tidal, flash, more... Phrases: flood plain staggers, more... ▸ Words similar to flood plain ▸ Usage examples for flood plain ▸ Idioms related to flood plain ▸ Wikipedia articles (New!) ▸ Words that often appear near flood plain ▸ Rhymes of flood plain ▸ Invented words related to flood plain