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
同义词：plutonium, atomic number 94
PU详细解释
PuNONE（无词性）The symbol for the element plutonium元素plutonium的符号
