Englishfor English speakers
insulator
Noun
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An insulator is a substance that does not conduct electricity or heat. It can be used to insulate things, such as a room.
arc
Noun
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An arc is part of a circle.
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Electricity jumping from one place to another. This is very bright and looks like lightning.
arc
Verb
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If something arcs, it makes an electrical curve.
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If something arcs, it goes along a curved path.
over
Preposition
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Something is over when it has finished, usually referring to an event.
When the movie was over we left the movie theater.
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In a location above something.
He stepped over the dog.
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From one side to the other.
They went over the bridge.
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If you invite someone over, you invite them to your house.
They had him over for tea.
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A number divided by another.
Eight over two is four.
over
Noun
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An over in a cricket match is six balls bowled from one end.
The captain told me I would have to bowl the next over.