English

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

 

elementary particle

 noun
noun
BrE BrE//ˌelɪmentri ˈpɑːtɪkl//
 
; NAmE NAmE//ˌelɪmentri ˈpɑːrtɪkl//
 
(physics) Molecules and matter
 
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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