Definition of elementary particle noun from the Oxford Advanced Learner's Dictionary


elementary particle

BrE BrE//ˌelɪmentri ˈpɑːtɪkl//
; NAmE NAmE//ˌelɪmentri ˈpɑːrtɪkl//
(physics) Molecules and matter
jump to other results
any of the different types of very small pieces of matter (= a substance) smaller than an atom See related entries: Molecules and matter
See the Oxford Advanced American Dictionary entry: elementary particle