We found 34 dictionaries that define the word noxious:

General (25 matching dictionaries)

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

Business (3 matching dictionaries)

24. noxious: Law.com Dictionary
25. Everybody's Legal Dictionary (No longer online)
26. noxious: Legal dictionary

Computing (1 matching dictionary)

27. noxious: Encyclopedia

Medicine (3 matching dictionaries)

28. Dorland's Illustrated Medical Dictionary (No longer online)
29. online medical dictionary (No longer online)
30. noxious: Medical dictionary

Miscellaneous (1 matching dictionary)

31. noxious: A Word A Day

Slang (1 matching dictionary)

32. Noxious: Urban Dictionary

(Note: See noxiously as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Harmful; injurious. Similar: pernicious, pestilent, deleterious, injurious, harmful, baneful, hurtful, vesicatory, vesicant, degrading, more... Opposite: innocuous, harmless, benign Types: toxic, poisonous, more... Phrases: noxious stimuli, noxious stimulus, noxious weeds, noxious gases, Noxious weed, more... Colors:     lime green,     neon yellow,     acid green,     poison purple,     sickly green, more... ▸ Word origin ▸ Words similar to noxious ▸ Usage examples for noxious ▸ Idioms related to noxious ▸ Wikipedia articles (New!) ▸ Popular nouns described by noxious ▸ Words that often appear near noxious ▸ Rhymes of noxious ▸ Invented words related to noxious