(chemistry) Any of a class of heterocyclic compounds having a four-membered ring containing 3 carbon atoms and 1 oxygen atom; the parent compound C₃H₆O.

A widespread flowering plant native to Europe and temperate regions of Asia, Leucanthemum vulgare. / (US, regional) Black-eyed Susan, Rudbeckia hirta.

plural of oxeye

(organic chemistry) The unsaturated seven-membered heterocycle containing six carbon atoms, one oxygen atom and three double bonds; it is tautomeric with the epoxide benzene oxide

(organic chemistry) An unsaturated seven-membered heterocycle having six carbon atoms, one oxygen atom and three double bonds

(organic chemistry) A saturated seven-membered heterocycle having six carbon atoms and one oxygen atom

(biochemistry) Any monosaccharide having a configuration with a four-membered ring

(obsolete, chemistry) oxylium

plural of oxepane

plural of oxepin