In particle physics, the baryons are the family of subatomic particles which are made of three quarks. The family notably includes the proton and neutron, which make up the atomic nucleus, but many other unstable baryons exist as well. The term "baryon" is derived from the Greek (barys), meaning "heavy," because at the time of their naming it was believed that baryons were characterized by having greater mass than other particles.
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