PLUTONIUM TRIGGER as NOUN

1. Meaning
   • a steel or beryllium sphere containing plutonium 239 that triggers nuclear fission when compressed by explosives
   Synonym(s)
   • plutonium pit (what does plutonium pit mean?)
   Hypernyms(s) plutonium trigger is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • trigger (what does trigger mean?)