WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / H / hydroxyl ion hydroxyl ion noun 12 letters Scrabble 28 WWF 27 Definitions noun the anion OH having one oxygen and one hydrogen atom hydroxide ion Look “hydroxyl ion” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →