hydroperoxyln.
/ˌhʌɪdrəʊpəˈrɒksʌɪl/, /ˌhʌɪdrəʊpəˈrɒksɪl/, U.S. /ˈˌhaɪdroʊpəˈrɑks(ə)l/ Chemistry.
The radical —O—HO, the protonated form of the superoxide anion. Usually attributive.
ΚΠ
1952 Jrnl. Amer. Chem. Soc. 72 4599/1 The resulting hydroperoxides may rearrange by the 1,4 addition of the hydroperoxyl group.
1977 Lima (Ohio) News 4 June 4/4 Nitric oxide, produced by combustion in aircraft engines, and a molecule called the hydroperoxyl radical, reacted together 10 to 40 times faster than previously estimated.
1998 J. W. Birks in D. L. Macalady Perspectives Environmental Chem. x. 234 Atmospheric reactions of ozone result in the production of many other oxidants, including the hydroxyl radical (OH), the hydroperoxyl radical (HO2), hydrogen peroxide (H2O2), [etc.].
2001 Free Radical Biol. & Med. 31 1208/2 Hydroperoxyl, the protonated form of superoxide, is a good initiator of lipid peroxidation in vitro.
This is a new entry (OED Third Edition, March 2007; most recently modified version published online March 2022).
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n.1952