Englishfor English speakers
portion
Noun
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A portion is a part of something.
We need to put more signs up in this portion of the city.
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A portion is an amount of food for one person.
Each portion has six meatballs.
portion
Verb
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If you portion something out, you give parts of it to different people.
They portioned out the water among them.
control
Noun
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If you have control over someone or something, you can make it do what you want.
He should try to take control and tell the other handlers what to do.
in the rain, he had lost control on the wet surface and spun off the road.
The country fell under the direct control of the army.
They are trying to keep tighter control over spending.
The government will demand improved pollution control systems for all factories.
Most companies devote some resources to quality control and product testing.
Unless birth control methods are used, sooner or later the woman is likely to get pregnant.
The continuing Soviet desire for arms control led to a SALT II treaty.
The brain's control systems tend to decline with age so that, for instance, our balance gets less good.
The experimental group took the medicine while the control group took a sugar pill.
Suddenly the airplane went out of control and started diving.
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A control is a button, switch, dial, etc. that lets you make a machine do what you want.
If you turn off your TV with the remote control, it continues to use a quarter of normal power.
She touched the volume control and the sound dropped.
control
Verb
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If you control something, you make it do what you want.
Too many people are overweight because they can't control their eating behaviour.
The company is controlled by a New York businessman.
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If you control something, you do not let its numbers or size grow too much.
The new plan should control inflation.
valve
Noun
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A valve is part of a tube that lets liquid or gas go through one way but stops it from going through the other way.
There are four valves in the heart that let blood go in one direction but stop it from going in the other direction.
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A valve is part of a tube that someone can open or close to let water or other things go through.
Open this valve to let water go through the pipe.