(chemistry) An oxidizing agent, especially one used to oxidize the fuel of a rocket or a fuel cell.

(chemistry) An amorphous solid, ZnO, white when pure but often pale yellow, used in pigments and cosmetics

(inorganic chemistry) A white powderous substance, CaO, normally made by heating calcium carbonate.

(inorganic chemistry) A white powder (MgO) with a high melting point; it occurs naturally as periclase, an ore of magnesium.

(organic chemistry) diethyl ether.

A torch that burns acetylene with a pure oxygen source to produce the flame.

Of or pertaining to Oxford or to the University of Oxford.

A native or inhabitant of Oxford. / A student or graduate of Oxford University.

(physics) A minor stable isotope of oxygen, ¹⁸₈O, having eight protons and ten neutrons; it amounts to about 0.2% of the element in nature

(physics) A rare stable isotope of oxygen, ¹⁷₈O, having eight protons and nine neutrons; it amounts to 0.037% of the element in nature