photon

English Thesaurus

1. a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle (noun.object)

hypernym	:	gauge boson,
definition	:	a particle that mediates the interaction of two elementary particles (noun.object)

part meronym	:	electromagnetic radiation, electromagnetic wave, nonparticulate radiation,
definition	:	radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge (noun.phenomenon)