[suhb-at-muh s-fer-ik, -feer-] /ˌsʌb æt məsˈfɛr ɪk, -ˈfɪər-/
(of a quantity) having a value lower than that of the atmosphere:
noun, Chemistry. 1. any component of an atom.
adjective, Physics. 1. of or relating to a process that occurs within an atom. 2. noting or pertaining to a particle or particles contained in an atom, as electrons, protons, or neutrons. adjective 1. of, relating to, or being a particle making up an atom or a process occurring within atoms: the electron is a […]
- Subatomic particle
subatomic particle n. Any of various units of matter below the size of an atom, including the elementary particles and hadrons. 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 […]
- Subatomic particles
subatomic particles definition See elementary particles.