plutonium pit is a noun meaning "a steel or beryllium sphere containing plutonium 239 that triggers nuclear fission when compressed by explosives". It carries one recorded sense.
a steel or beryllium sphere containing plutonium 239 that triggers nuclear fission when compressed by explosives
Definitions, synonyms and semantic relations for plutonium pit come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.