We found 29 dictionaries that define the word poison oak:

General (17 matching dictionaries)

1. poison oak: Longman Dictionary of Contemporary English
2. poison oak: Merriam-Webster
3. poison oak: Oxford Learner's Dictionaries
4. poison oak: American Heritage Dictionary of the English Language
5. poison oak: Collins English Dictionary
6. poison oak: Vocabulary.com
7. poison oak: Wordnik
8. poison oak: Wiktionary
9. poison oak: The Wordsmyth English Dictionary-Thesaurus
10. poison oak: Infoplease Dictionary
11. poison oak: Dictionary.com
12. Poison oak: Wikipedia, the Free Encyclopedia
13. poison oak: Rhymezone
14. poison oak: FreeDictionary.org
15. poison oak: Mnemonic Dictionary
16. poison oak: TheFreeDictionary.com

Business (1 matching dictionary)

17. poison oak: Legal dictionary

Computing (1 matching dictionary)

18. poison oak: Encyclopedia

Medicine (9 matching dictionaries)

19. poison oak: Merriam-Webster Medical Dictionary
20. Dorland's Illustrated Medical Dictionary (No longer online)
21. Poison oak: MedTerms.com Medical Dictionary
22. online medical dictionary (No longer online)
23. Allergy Glossary (No longer online)
24. Poison-oak, poison oak: Medical dictionary
25. University of Maryland Glossary of Medical Terms (No longer online)
26. Poison oak: Drug Medical Dictionary
27. Hyperdictionary (No longer online)

Science (1 matching dictionary)

28. A Modern Herbal, 1931, by Mrs. M. Grieve (No longer online)

(Note: See poison_oaks as well.)

Definitions from Wiktionary (poison oak) ▸ noun:  Any of the species of Toxicodendron with compound leaves having three oak-like leaflets, native to North America. Similar: poison ivy, markweed, poison mercury, rhus radicans, Toxicodendron radicans, toxicodendron, western poison oak, yeara, live oak, oakleaf, more... Opposite: antidote, cure, remedy, treatment Types: poison ivy, poison sumac, poisonwood, more... Phrases: western poison oak, eastern poison oak, more... Adjectives: oak, yew, linden, araucarian, cade, cedared, kino, mahogany, ebony, fir, elmen ▸ Words similar to poison oak ▸ Usage examples for poison oak ▸ Idioms related to poison oak ▸ Wikipedia articles (New!) ▸ Words that often appear near poison oak ▸ Rhymes of poison oak ▸ Invented words related to poison oak