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peroxide

noun [C or U]
 
 
/pəˈrɒk.saɪd/ US  /pəˈrɑːk-/

Definition

a liquid chemical used to make hair very pale in colour or to kill bacteria: Peroxide is a bleach and an antiseptic. Peroxides are found in household detergents. She has dyed her brown hair peroxide blonde.HairdressingCleaning agents
(Definition of peroxide noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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