per‧ox‧ide /pəˈrɒksaɪd $ -ˈrɑːk-/
noun [uncountable][
Date: 1800-1900;
Origin: per- (from Latin, from per; ⇒ per) + oxide]
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) [TahlilGaran] Dictionary of Contemporary English ▲