Definition
An antimeson is the antimatter counterpart of a meson ⚛️. Mesons are subatomic particles composed of a quark and an antiquark. Antimesons have the opposite charge and other quantum numbers compared to their corresponding mesons. Think of it as the flipped version of a meson. When a meson and an antimeson meet, they can annihilate each other. Studying antimesons helps scientists understand the fundamental forces of nature.