(physics) A pair of electrons (or other fermions), of opposite spin, whose theorised behaviour is the basis of the BCS theory of superconductivity.

(game theory) Informally, a game formalized using a function (called the characteristic function) that assigns to each coalition of players a real number representing the payoff that the coalition can gain if it is formed, without specifying how the outcome is divided among the participants of the coalition; upon the execution of the game, each player can be a member of at most one coalition.

One of 114 counties in Missouri, United States. County seat: Boonville.

(theology) The Roman Catholic, Arminian and Socinian doctrine that the human will cooperates with the divine in the matter of saving grace.

A form of federalism in which national, state, and local governments interact cooperatively and collectively to solve common problems, rather than making separate but similar policies.

(aviation) A mechanical aerodynamic wedge that prevents the ventral airstair of an aircraft from being lowered during flight.

plural of Cooper vane

plural of Cooper test

(sociolinguistics) The idea that listeners and speakers need to cooperate in order to communicate effectively.

A river in Australia, flowing into Lake Eyre basin.