ALPHA PARTICLE


Meaning of ALPHA PARTICLE in English

ˈalpha ˌparticle BrE AmE noun [countable] technical

an ATOMIC PARTICLE consisting of two ↑ proton s and two ↑ neutron s that is sent out by some ↑ radioactive substances

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.