Noun

(en noun)

(chemistry) A compound or radical bound to an oxygen by a single bond

*{{quote-book, 2007, Albert W. Girotti & Paolo U. Giacomoni, chapter=Lipid and Protein Damage Provoked by Ultraviolet Radiation: Mechanisms of Indirect Photooxidative Damage, Biophysical and Physiological Effects of Solar Radiation on Human Skin citation

, passage=If a Type I- or Type II-derived LOOH encounters a ligated Fe2+ or Cu+ on a membrane, it invariably undergoes one-electron reduction to an oxyl radical (LO-)

(chemistry, obsolete) An acid anhydride

*{{quote-journal, 1865, W.A. Miller, On Chemical Nomenclature, The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science citation

, passage=The formula (CaO, CO2) would represent calcic carbonate as a compound of a base and an oxyl . }}

Noun

(head)

* 1734 , , J. Roberts, page 14:

...into the glands that separate the oyl abovesaid.