ˌelementary ˈparticle BrE AmE noun [countable]
technical one of the types of pieces of matter including ↑ electron s , ↑ proton s , and ↑ neutron s that make up atoms
ˌelementary ˈparticle BrE AmE noun [countable]
technical one of the types of pieces of matter including ↑ electron s , ↑ proton s , and ↑ neutron s that make up atoms
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012