We found 27 dictionaries that define the word mustard gas:

General (18 matching dictionaries)

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

Computing (1 matching dictionary)

17. mustard gas: Encyclopedia

Medicine (4 matching dictionaries)

18. mustard gas: Merriam-Webster Medical Dictionary
19. Medical Dictionary (No longer online)
20. online medical dictionary (No longer online)
21. mustard gas: Medical dictionary

Miscellaneous (1 matching dictionary)

22. Glossary of Terrorism Terms (No longer online)

Slang (1 matching dictionary)

23. mustard gas: Urban Dictionary

Tech (2 matching dictionaries)

24. Explosives (No longer online)
25. Chemical Fact Sheet (No longer online)

Definitions from Wiktionary (mustard gas) ▸ noun:  A highly cytotoxic vesicant, C₄H₈Cl₂S, used in World War I that is known to cause skin burns, blisters, inflammation, edema, and potentially other respiratory effects. Similar: sulfur mustard, dichloroethyl sulfide, yperite, nitrogen mustard, poison gas, bromobenzyl cyanide, blister agent, vesicant, spiromustine, trichlormethine, more... Opposite: antimustard gas, antidote, counteragent Types: Lewisite, Sulfur, more... Phrases: nitrogen mustard gas, more... ▸ Words similar to mustard gas ▸ Usage examples for mustard gas ▸ Idioms related to mustard gas ▸ Wikipedia articles (New!) ▸ Words that often appear near mustard gas ▸ Rhymes of mustard gas ▸ Invented words related to mustard gas