Engelsk navneord: plutonium 239 | |||
1. | plutonium 239 (om masse el. substans) 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 | ||
Mindre specifikke termer | atomic number 94, plutonium, Pu | ||
Mere specifikke termer | weapon-grade plutonium, weapons plutonium | ||