Englishfor English speakers
excess
Noun
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An excess is an amount that is too much.
Cut the meat off the bone and remove any excess fat.
At our meetings, there was always an excess of food.
Cover the wood surface with oil and then wipe off the excess.
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Excesses are behaviours that are not against the law, but are still not accepted by society.
After the excesses of her teens, she stopped smoking, drinking, and partying completely.
People are sick of watching their leaders brought down by their excesses.
Wild gambling and extravagent spending were excesses of the Regency period.
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If mathx/math is in excess of mathy/math, it is more than mathy/math.
The car was traveling in excess of 150 km/h.
neutron
Noun
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A neutron is a type particle in the nucleus (center) of an atom that is the largest out of all the particles in an atom, weighs the most and has no charge. There are sometimes different numbers of them in an atom, which make isotopes (atoms that have different numbers of neutrons). They can also change the atomic mass of an atom (how much an atom weighs).
Neutrons take up most of the space in an atom.