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.
beam
Noun
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A beam is a line of light or energy.
A beam of sunlight came through the window making a rectangle on the floor.
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A beam is a long straight piece of wood or metal used in building to support weight.
Inside, the ceiling of the tunnel was held up with beams and was high enough that we could stand.
beam
Verb
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If you beam a signal from one place to another, you send it through the air.
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If you beam, you smile and look very happy.
propagation
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noun
the spreading of something (a belief or practice) into new regions
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noun
(= generation)
the act of producing offspring or multiplying by such production
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noun
the movement of a wave through a medium