We found 3 dictionaries that define the word hydroxyl ions:

General (2 matching dictionaries)

1. hydroxyl ions: Vocabulary.com
2. hydroxyl ions: Cambridge Advanced Learner's Dictionary

Medicine (1 matching dictionary)

3. hydroxyl ions: Merriam-Webster Medical Dictionary

(Note: See hydroxyl_ion as well.)

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