We found 25 dictionaries that define the word ailanthus:

General (21 matching dictionaries)

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

Computing (1 matching dictionary)

22. ailanthus: Encyclopedia

Medicine (2 matching dictionaries)

23. ailanthus: Merriam-Webster Medical Dictionary
24. Medical Dictionary (No longer online)

Science (1 matching dictionary)

25. ailanthus: Dictionary of Botanical Epithets

(Note: See ailanthuses as well.)

Definitions from Wiktionary (ailanthus) ▸ noun:  Any of several deciduous Asiatic trees of the genus Ailanthus, including the tree of heaven. ▸ noun:  In particular, Ailanthus altissima. Similar: ailantus, tree of heaven, heaven tree, ailanto, stinkweed, ghetto palm, siris, plane tree, albizzia, alocasia, more... Types: tree of heaven, Chinese sumac, stinking shumac, varnish tree, more... Phrases: Ailanthus altissima, ailanthus silkworm, genus ailanthus, Ailanthus webworm, Ailanthus excelsa, more... Colors:     bark brown,     urban gray,     sky blue,     sunset orange,     forest green, more... ▸ Word origin ▸ Words similar to ailanthus ▸ Usage examples for ailanthus ▸ Idioms related to ailanthus ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ailanthus ▸ Words that often appear near ailanthus ▸ Rhymes of ailanthus ▸ Invented words related to ailanthus