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
subastral,
subastringent,
subatmospheric,
subatom,
subatomic,
subatomic particle,
subatomic particles,
subaudition,
subauricular,
subaxial,
subaxillary
Scientific definitions for subatomic particle
subatomic particle
[ sŭb′ə-tŏm′ĭk ]
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.