We found 39 dictionaries that define the word halogen:

General (25 matching dictionaries)

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

Business (1 matching dictionary)

24. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

25. halogen: Encyclopedia

Medicine (4 matching dictionaries)

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

Science (3 matching dictionaries)

30. Halogen: Eric Weisstein's World of Chemistry
31. Halogen: Material Safety Data Sheets HyperGlossary
32. General Chemistry Online (No longer online)

Slang (1 matching dictionary)

33. Halogen: Urban Dictionary

Tech (4 matching dictionaries)

34. AUTOMOTIVE TERMS (No longer online)
35. Explosives (No longer online)
36. PUMP AND SEAL TERMS (No longer online)
37. PhotoNotes Dictionary of Film and Digital Photography (No longer online)

(Note: See halogenous as well.)

Definitions from Wiktionary ( ) ▸ noun:  (chemistry) Any element of group 17, i.e. fluorine, chlorine, bromine, iodine, astatine and tennessine. ▸ noun:  A light fixture in which the filament is surrounded by an atmosphere of a halogen gas. Similar: halogenide, dihalogen, halogenite, chlorine, radiohalogen, halide, organohalogen, halogenohydrocarbon, interhalogen, chlorin, more... Opposite: non-halogen, inert, noble gas Phrases: halogen lamp, halogen lamps, tungsten halogen, halogen light, halogen bulb, more... Adjectives: free, organic, total, reactive, active, quartz, excess, only, tungsten, elemental, corresponding ▸ Word origin ▸ Words similar to halogen ▸ Usage examples for halogen ▸ Idioms related to halogen ▸ Wikipedia articles (New!) ▸ Popular adjectives describing halogen ▸ Words that often appear near halogen ▸ Rhymes of halogen ▸ Invented words related to halogen