We found 14 dictionaries that define the word hydroxyl ion:

General (9 matching dictionaries)

1. hydroxyl ion: American Heritage Dictionary of the English Language
2. hydroxyl ion: Vocabulary.com
3. hydroxyl ion: Cambridge Advanced Learner's Dictionary
4. hydroxyl ion: Dictionary.com
5. Hydroxyl ion: Wikipedia, the Free Encyclopedia
6. hydroxyl ion: Rhymezone
7. hydroxyl ion: FreeDictionary.org
8. hydroxyl ion: Mnemonic Dictionary
9. hydroxyl ion: TheFreeDictionary.com

Computing (1 matching dictionary)

10. hydroxyl ion: Encyclopedia

Medicine (3 matching dictionaries)

11. hydroxyl ion: Merriam-Webster Medical Dictionary
12. DICTIONARY OF TERMS IN ORAL PHYSIOLOGY (No longer online)
13. hydroxyl ion: Medical dictionary

Tech (1 matching dictionary)

14. Glossary of Meteorology (No longer online)

(Note: See hydroxyl_ions as well.)

Definitions from WordNet (hydroxyl ion) ▸ noun:  the anion OH having one oxygen and one hydrogen atom ▸ Words similar to hydroxyl ion ▸ Usage examples for hydroxyl ion ▸ Idioms related to hydroxyl ion ▸ Wikipedia articles (New!) ▸ Words that often appear near hydroxyl ion ▸ Rhymes of hydroxyl ion ▸ Invented words related to hydroxyl ion