Longman Dictionary of Contemporary English homepage

Date: 1800-1900
Origin: per- (from Latin, from per; PER) + oxide

peroxide

 noun
     
Related topics: Hair and Beauty, Compounds
per‧ox‧ide [uncountable]
HCCDCB a liquid chemical used to make hair light in colour or to kill bacteria:
her waist-length peroxide blonde hair (=hair made light yellow using peroxide)
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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