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Definition of hydrogen peroxide noun from the Oxford Advanced Learner's Dictionary

hydrogen peroxide

noun
 
/ˌhaɪdrədʒən pəˈrɒksaɪd/
 
/ˌhaɪdrədʒən pəˈrɑːksaɪd/
(also peroxide)
[uncountable]
(symbol H2O2)
(chemistry)
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  1. a clear liquid used to kill bacteria and to bleach hair (= make it lighter)Topics Appearancec2
See hydrogen peroxide in the Oxford Advanced American Dictionary
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