radioactive decay

Từ điển Oxford Learners Wordfinder Dictionary

noun

the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
• Syn:
decay, disintegration
• Derivationally related forms:
disintegrate (for: disintegration), decay (for: decay)
• Hypernyms:
nuclear reaction
• Hyponyms:
alpha decay, beta decay