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English definition of “control”

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control

verb [T] uk   /kənˈtrəʊl/ us    /-ˈtroʊl/ (-ll-)
B1 to order, limit, or rule something, or someone's actions or behaviour: If you can't control your dog, put it on a lead! You're going to have to learn to control your temper. The temperature is controlled by a thermostat. The laws controlling drugs are very strict in this country. The government is trying to control spending.
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control

noun uk   /kənˈtrəʊl/ us    /-ˈtroʊl/

control noun (POWER)

B2 [C or U] the act of controlling something or someone, or the power to do this: She's got no control over that child - it's terrible. He wants the government to impose strict controls on dog ownership. The dictator took control of the country in 1933. He felt he was losing control of events. You need to stay in control of your emotions. The car skidded and went out of control, crashing into an oncoming truck. There was nothing we could do about it - the situation was out of/beyond/outside our control. She criticized the police's methods of crowd control.under control B2 being dealt with or limited successfully: It seems that the disease is now under control. Everything is under control, sir. It took them two hours to bring/get the fire under control.
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control noun (SWITCH)

B2 [C] a switch or other device used to operate a machine such as a vehicle: The main instruments are in the centre of the control panel. Captain Firth sat at the controls of the aircraft. [C usually singular] ( also control key, written abbreviation Ctrl) a key on a computer keyboard that you press at the same time as other keys to make the keyboard operate in a particular way: Press and hold down the control key while you press 9. I pressed Control Alt Delete but nothing happened.

control noun (IN AN EXPERIMENT)

[C] specialized science in an experiment, an object or system that is not changed so that you can compare it with similar objects or systems that are intentionally changed
(Definition of control from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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