RADIOACTIVITY as NOUN

1. Meaning
   • the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
   Synonym(s)
   • radiation (what does radiation mean?)
   Hypernyms(s) radioactivity is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • emission (what does emission mean?)
   Hyponym(s)
   • corpuscular radiation (what does corpuscular radiation mean?)
   • particulate radiation (what does particulate radiation mean?)