Boson definition

Any of a class of particles, including photons, mesons, or alpha particles, that have integral spins and do not obey the exclusion principle, so that any number of identical particles may occupy the same quantum state.

Any of a class of elementary or composite particles, including the photon, pion, and gluon, that are not subject to the Pauli exclusion principle (that is, any two bosons can potentially be in the same quantum state ). The value of the spin of a boson is always an integer. Mesons are bosons, as are the gauge bosons (the particles that mediate the fundamental forces). They are named after the physicist Satyendra Nath Bose.

Any of a class of particles, including photons, mesons, or alpha particles, that have integral spins and do not obey the exclusion principle, so that any number of identical particles may occupy the same quantum state.

(particle physics) Any of a class of subatomic particles that do not obey the Pauli exclusion principle and have zero or integral spin, including the mesons, weakons, and classons: bosons are thought to carry the four fundamental forces of nature (electromagnetism, gravity, strong interaction, weak interaction)