English Explanatory Dictionary

alpha particle

English dictionary entry

Meanings

noun
  1. A doubly positively charged nucleus of a helium-4 atom (consisting of two protons and two neutrons), emitted as a consequence of radioactivity.

Pronunciation

LL-Q1860 (eng)-Flame, not lame-alpha particle.wav

Word forms

alpha particle alpha particles

Related words

α-particle gamma ray

Derived words

alpha particle X-ray spectrometer
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