noun. the monovalent group -OH in such compounds as bases and some acids and alcohols.
- hydroxyl radical
- chemical group
- hydroxyl group
Rhymes with Hydroxyl Ion
Sentences with hydroxyl-ion
1. Noun Phrase
A pH above 7 indicates an excess of hydroxyl ions.
2. Noun Phrase
In contrast, a base is a substance that accepts hydrogen ions and produces negative hydroxyl ions in water.
noun. ['ˈaɪˌɑːn, ˈaɪən'] a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons.
- subatomic particle
- ἰόν (Ancient Greek (to 1453))