I. pə-ˈräk-ˌsīd noun
Date: 1804
: a compound (as hydrogen peroxide) in which oxygen is visualized as joined to oxygen
• per·ox·id·ic -ˌräk-ˈsi-dik adjective
II. transitive verb
( -id·ed ; -id·ing )
Date: 1906
: to treat with a peroxide ; especially : to bleach (hair) with hydrogen peroxide
III. adjective
Date: 1920
: having or being bleached hair
a peroxide blonde