Medical Dictionary
elementary particle
noun
Medical Definition of ELEMENTARY PARTICLE
1
: any of the particles of which matter and energy are composed or which mediate the fundamental forces of nature; especially : one (as the photon or the electron) whose existence has not been attributed to the combination of other more fundamental entities
2
: one of the structural units of mitochondrial cristae that are observable by the electron microscope usually as spheres or stalked spheres and are probably the seat of fundamental energy-producing reactions
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