s/n14650137

Information
has gloss	(noun) 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 plutonium 239
lexicalization	eng: plutonium 239
subclass of	(noun) a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239 Pu, atomic number 94, plutonium
has subclass	(noun) plutonium 239 that is recovered when nuclear weapons are disassembled; it is stored in plutonium pits weapons plutonium, weapon-grade plutonium