A major industrial process for smelting aluminium, by dissolving alumina in molten cryolite and then performing electrolysis.

plural of Monty Hall problem

(Cambridge University, historical) Former name of Pembroke College, Cambridge.

(Oxford University, historical) Former name of St Peter's College, Oxford.

A rare genetic disorder that affects the development of many parts of the body.

(quantum mechanics) An effect marked by the quantization of the Hall resistance, observed in two-dimensional electron systems subjected to low temperatures and strong magnetic field.

A brainteaser regarding probability, in which a game show contestant picks a door to win a prize. One door conceals a car; the other two conceal goats. After the contestant picks a door, the host opens one of the two remaining doors which reveals a goat. Counterintuitively, it is then in the contestant's interests to switch to the remaining door.

A suburban area and manor house in the Metropolitan Borough of Bolton, Greater Manchester, England (OS grid ref SD7211).

(chiefly US) Nothing can be done to change the situation, because it is a governmental decision.