subatomic particle


n.

Any of various units of matter below the size of an atom, including the elementary particles and hadrons.

Words nearby subatomic particle

Scientific definitions for subatomic particle

subatomic particle
[ sŭb′ə-tŏmĭk ]

Any of various particles of matter that are smaller than a hydrogen atom. Protons, neutrons, and electrons are subatomic particles, as are all hadrons and leptons. See also composite particle elementary particle.