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.
injection
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noun
the forceful insertion of a substance under pressure
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noun
(= shot)
the act of putting a liquid into the body by means of a syringe
the nurse gave him a flu shot
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noun
any solution that is injected (as into the skin)
laser
Noun
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A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.
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The term laser originated as an acronym for "light amplification by stimulated emission of radiation".