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

plural of cooperative game

A co-operative company established under the European Union law, which may operate throughout the European Economic Area (EEA) without needing to set up a subsidiary in each member state.

plural of European Cooperative Society

(dated) a person who samples, bottles and sells wine

A test of physical fitness in the US military, based on how far a person can run in a set period of time.

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

Accipiter cooperii, a medium-sized hawk found from Canada to northern Mexico.

plural of Cooper's hawk

plural of wine cooper