1. Unlike fermions, Bosons do not obey the Pauli Exclusion Principle

2. 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 …

3. Boson [ bō ′sŏn ] 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)