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A baryon is a composite subatomic pairticle made up o three quarks (as distinct frae mesons, which comprise ane quark an ane antiquark). Baryons an mesons belang tae the hadron faimily, which are the quark-based pairticles. The name "baryon" comes frae the Greek wird for "hivy" (βαρύς, barys), acause, at the time o thair namin, maist kent elementary pairticles haed lawer masses nor the baryons.