We found 24 dictionaries that define the word ground water:

General (14 matching dictionaries)

1. ground water: American Heritage Dictionary of the English Language
2. ground water: Collins English Dictionary
3. ground water: Vocabulary.com
4. ground-water: Wordnik
5. ground water: Cambridge Advanced Learner's Dictionary
6. ground water: Wiktionary
7. ground water (groundwater): The Wordsmyth English Dictionary-Thesaurus
8. ground water: Infoplease Dictionary
9. ground water: Dictionary.com
10. Ground-water, Ground water: Wikipedia, the Free Encyclopedia
11. ground water: Rhymezone
12. ground water: FreeDictionary.org
13. ground water: Mnemonic Dictionary
14. ground water: TheFreeDictionary.com

Business (3 matching dictionaries)

15. Construction Term Glossary (No longer online)
16. ground water: Financial dictionary
17. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

18. ground water: Encyclopedia

Medicine (1 matching dictionary)

19. online medical dictionary (No longer online)

Science (1 matching dictionary)

20. Illustrated Glossary of Geologic Terms (No longer online)

Tech (4 matching dictionaries)

21. Lake and Water Word Glossary (No longer online)
22. National Weather Service Glossary (No longer online)
23. Ground water, Ground water: Science In Your Watershed: Hydrologic Definitions
24. Water-Science Glossary of Terms (No longer online)

(Note: See ground_waters as well.)

Definitions from Wiktionary (Ground water) ▸ noun:  Alternative form of groundwater [Water that exists beneath the earth's surface in underground streams and aquifers.] Similar: spring water, well water, rain water, spring-water, river-water, under-grounder, flood water, sea water, water flow, riverwater, more... Types: mineral water, spring water, artesiwater, distilled water, purified water, more... Phrases: confined ground water, free ground water, ground water hydrology, ground water outflow, ground water runoff, more... Adjectives: freshwater, fresh, saline, seawater, briny, artesian, waterie, well, algific, fountful, mineral ▸ Words similar to ground water ▸ Usage examples for ground water ▸ Idioms related to ground water ▸ Wikipedia articles (New!) ▸ Words that often appear near ground water ▸ Rhymes of ground water ▸ Invented words related to ground water