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| interparticle |
combined form of particle. |
| ion |
an electrically charged particle created in a gas, as by an electric discharge. [1/2 definitions] |
| magneton |
a unit used to express the magnetic moment of an atomic or subatomic particle. |
| microplastic |
(usu. pl.) a tiny piece or particle of plastic. |
| molecule |
a single atom or several atoms bound together electromagnetically, forming the smallest particle that possesses all the characteristic physical and chemical properties of an element or compound. [2 definitions] |
| mote |
a fine particle of dust; speck. |
| multiparticle |
combined form of particle. |
| muon |
an unstable subatomic particle with a positive or negative charge, having 207 times the mass of an electron. |
| nanoparticle |
a microscopic particle with a size measured in nanometers. |
| neutrino |
an elementary, weakly interacting subatomic particle of the lepton family, having little or no mass and a spin of one-half. |
| neutron |
an elementary particle having no charge, spin of one-half, and mass approximately equal to a proton, present in the nucleus of all atoms except the common isotope of hydrogen. |
| -on1 |
subatomic particle. [1/3 definitions] |
| periphrastic |
formed with an auxiliary verb or a particle instead of an inflection, such as "it did ring" rather than "it rang". [1/2 definitions] |
| photon |
the fundamental unit of electromagnetic energy with zero mass, no electrical charge, and a spin of one, usu. regarded as an elementary particle. |
| positron |
in physics, an elementary particle equal to an electron in mass, spin, and magnitude of charge, but whose charge is positive. |
| potential energy |
in physics, the energy of a particle, body, or system that is determined by its position or structure. (Cf. kinetic energy.) |
| proton |
an elementary particle of matter in the nucleus of all atoms, having a positive electrical charge. |
| quantum |
a discrete and irreducible unit of measurement, such as the spin of an elementary particle. [1/3 definitions] |
| reaction |
in physics, the atomic change that occurs when a nucleus is bombarded with a particle, photon, or other nucleus. [1/6 definitions] |
| spark |
a fiery or brightly glowing particle thrown off by burning wood. [2/8 definitions] |
| sparkle |
a fiery or brightly glowing particle; spark. [1/9 definitions] |
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