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English definition of “hydroxyl ion”

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hydroxyl ion

noun [C] uk   /haɪˌdrɒk.sɪlˈaɪən/ us    /-ˈdrɑːk-/ specialized
an ion with a negative charge, consisting of an oxygen atom and a hydrogen atom
(Definition of hydroxyl ion from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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