You searched for: “particle
particle (s) (noun), particles (pl)
Any very small piece of matter, such as a molecule or atom: Particles can refer to pieces even smaller, such as electrons, protons, and neutrons. Another application is to larger ones, as in interstellar dust.

This entry is located in the following unit: Astronomy and related astronomical terms (page 18)
Word Entries containing the term: “particle
subatomic particle
An electron, proton, or neutron; one of the three major particles of which atoms are composed.
This entry is located in the following unit: Biology Terms + (page 3)