weapons plutonium

English Thesaurus

1. plutonium 239 that is recovered when nuclear weapons are disassembled; it is stored in plutonium pits (noun.substance)

hypernym	:	plutonium 239,
definition	:	a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel; produced by irradiating uranium 238 with slow electrons (noun.substance)