system

1 [C] ~ (of / for sth) an organized set of ideas or theories or a particular way of doing sth: the British educational system * a new system for assessing personal tax bills * a system of government seealsoBINARY, METRICSYSTEM 2 [C] a group of things, pieces of equipment, etc. that are connected or work together: a transport system * heating systems * a computer / stereo system * a security system seealsoECOSYSTEM, EXPERTSYSTEM, OPERATINGSYSTEM, PUBLICADDRESSSYSTEM, SOLARSYSTEM 3 [C] a human or an animal body, or a part of it, when it is being thought of as the organs and processes that make it function: You have to wait until the drugs have passed out of your system. * the male reproductive system seealsoCENTRALNERVOUSSYSTEM, DIGESTIVESYSTEM, IMMUNESYSTEM 4 (the system) [sing.] (informal, usually disapproving) the rules or people that control a country or an organization, especially when they seem to be unfair because you cannot change them: You can't beat the system (= you must accept it). * young people rebelling against the system IDIOMS get sth out of your system (informal) to do sth so that you no longer feel a very strong emotion or have a strong desire: I was very angry with him, but now I feel I've got it out of my system.