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Definition of Oxidation state
1. Noun. The degree of oxidation of an atom or ion or molecule; for simple atoms or ions the oxidation number is equal to the ionic charge. "The oxidation number of hydrogen is +1 and of oxygen is -2"
Definition of Oxidation state
1. Noun. (chemistry) the state of an atom having a particular oxidation number ¹
¹ Source: wiktionary.com