the world > matter > physics > atomic physics > particle physics > [noun] > a particle (8)
Physics. Any of numerous constituents of the physical world that are smaller than an atomic nucleus, such as protons, electrons, neutrinos, and…
Subcategories:
— kind of (1)
— elementary (2)
— travelling below speed of light (1)
— neutral particle (1)
— number occupying energy state (1)
— capacity to resist disruption (1)