Meaning of “hydroxyl ion” in the English Dictionary

british dictionary

"hydroxyl ion" in British English

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hydroxyl ionnoun [ C ]

uk /haɪˌdrɒk.sɪl ˈaɪən/ us /haɪˌdrɑːk.sɪl ˈaɪ.ən/ specialized

an ion with a negative charge, consisting of an oxygen atom and a hydrogen atom

(Definition of “hydroxyl ion” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)