We found 39 dictionaries that define the word impermeable:

General (25 matching dictionaries)

1. impermeable: Merriam-Webster
2. impermeable: Oxford Learner's Dictionaries
3. impermeable: American Heritage Dictionary of the English Language
4. impermeable: Collins English Dictionary
5. impermeable: Vocabulary.com
6. impermeable: Wordnik
7. impermeable: Cambridge Advanced Learner's Dictionary
8. impermeable: Wiktionary
9. impermeable: Webster's New World College Dictionary, 4th Ed.
10. impermeable: The Wordsmyth English Dictionary-Thesaurus
11. impermeable: Infoplease Dictionary
12. impermeable: Dictionary.com
13. impermeable: Online Etymology Dictionary
14. Impermeable: Wikipedia, the Free Encyclopedia
15. Impermeable: Online Plain Text English Dictionary
16. impermeable: Webster's Revised Unabridged, 1913 Edition
17. impermeable: Rhymezone
18. Impermeable, impermeable: AllWords.com Multi-Lingual Dictionary
19. impermeable: Webster's 1828 Dictionary
20. impermeable: FreeDictionary.org
21. impermeable: Mnemonic Dictionary
22. impermeable: TheFreeDictionary.com
23. impermeable: Longman Dictionary of Contemporary English

Business (3 matching dictionaries)

24. Construction Term Glossary (No longer online)
25. impermeable: Legal dictionary
26. impermeable: Financial dictionary

Computing (1 matching dictionary)

27. impermeable: Encyclopedia

Medicine (4 matching dictionaries)

28. impermeable: Merriam-Webster Medical Dictionary
29. Dorland's Illustrated Medical Dictionary (No longer online)
30. online medical dictionary (No longer online)
31. impermeable: Medical dictionary

Tech (6 matching dictionaries)

32. AUTOMOTIVE TERMS (No longer online)
33. Lake and Water Word Glossary (No longer online)
34. National Weather Service Glossary (No longer online)
35. Schlumberger Oilfield Glossary (No longer online)
36. Oil and Gas Well Drilling and Servicing eTool (No longer online)
37. Glossary of Water Resource Terms (No longer online)

(Note: See impermeability as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Impossible to permeate. ▸ adjective:  Not allowing passage, especially of liquids; waterproof. Similar: water-repellent, water-resistant, rubberized, rubber, unpermeable, impenetrable, impermeant, nonpermeable, impervious, imperforable, more... Opposite: permeable, porous, penetrable, absorbent Colors:     charcoal,     onyx,     obsidian,     graphite,     midnight blue, more... ▸ Word origin ▸ Words similar to impermeable ▸ Usage examples for impermeable ▸ Idioms related to impermeable ▸ Wikipedia articles (New!) ▸ Popular nouns described by impermeable ▸ Words that often appear near impermeable ▸ Rhymes of impermeable ▸ Invented words related to impermeable