(chemistry) The chemical compound Fe₂O₃, iron oxide where iron has a valence of +3.

(inorganic chemistry) The solid, Al₂O₃, commonly known as alumina; it occurs as bauxite, sapphire, ruby and other forms; it is used in the manufacture of ceramics

(inorganic chemistry) Either of two binary compounds of titanium and oxygen - titanium dioxide and titanium trioxide

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

An old term for copper(I) oxide, chemical formula Cu₂O. Used as a pigment, fungicide and antifouling ingredient.

Alternative spelling of aluminium oxide

(inorganic chemistry) Any mixture of the oxides of more than one metal, but especially the blend of plutonium and uranium oxides that is used (as MOX fuel) in nuclear reactors

A type of leather shoe with lacing seamlessly integrated into the vamp, giving it a formal appearance.

plural of Oxford comma

plural of oxeye daisy