We found 38 dictionaries that define the word porous:

General (26 matching dictionaries)

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

Business (1 matching dictionary)

25. porous: Legal dictionary

Computing (1 matching dictionary)

26. porous: Encyclopedia

Medicine (4 matching dictionaries)

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

Slang (1 matching dictionary)

31. porous: Urban Dictionary

Tech (5 matching dictionaries)

32. AUTOMOTIVE TERMS (No longer online)
33. Lake and Water Word Glossary (No longer online)
34. Schlumberger Oilfield Glossary (No longer online)
35. porous: Coin Collecting
36. Glossary of Water Resource Terms (No longer online)

(Note: See porously as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Full of tiny pores that allow fluids or gasses to pass through. ▸ adjective:  (figurative) With many gaps or loopholes. Similar: poriferous, porose, permeable, leaky, holey, pervious, hyperpermeable, perforable, permeative, breathable, more... Opposite: nonporous, impermeable, dense, solid, compact Types: sponge, cork, sand, clay, charcoal, carbon, gravel, leather, cotton, felt, more... Phrases: Porous medium, porous rock, diffuse porous, ring porous, porous disk, more... Adjectives: diffuse, non, least, more, ring, whole, coarsely, fractured, certain, bare, micro Colors:     beige,     sand,     taupe,     ivory,     cream, more... ▸ Word origin ▸ Words similar to porous ▸ Usage examples for porous ▸ Idioms related to porous ▸ Wikipedia articles (New!) ▸ Popular nouns described by porous ▸ Words that often appear near porous ▸ Rhymes of porous ▸ Invented words related to porous