Englishfor English speakers
electron
Noun
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An electron is a particle that orbits the nucleus of an atom that has a negative charge.
impact
Noun
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An impact is the act of one object hitting another.
In tests, the driver was unhurt, even in high-speed impacts.
Many buildings were destroyed as the plane exploded on impact.
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The impact is the effect of an act, statement, change, etc.
The report noted that most teachers feel that IT has made little impact on formal education.
The environmental impact of such increases in efficiency, however, depends on how you generate the power.
impact
Verb
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If something impacts you, it has an effect on you.
It is obvious how bad movies will impact on children.
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If you impact something, you press (or pack) its together.
There is a special tool to impact the road when it is under construction so the base is solid.
excitation
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noun
(= excitement)
something that agitates and arouses
he looked forward to the excitements of the day
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noun
the neural or electrical arousal of an organ or muscle or gland
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noun
(= excitement, inflammation)
the state of being emotionally aroused and worked up
his face was flushed with excitement and his hands trembled
he tried to calm those who were in a state of extreme inflammation