プルトニウムプルトニウムCommon wordFreq.FrequencyTop 50,000Meanings1nounplutonium (Pu)The chemical element with atomic number 94. Used in nuclear reactors and weapons.プルトニウムは原げん子し力りょく発はつ電でんで使つかわれる。Plutonium is used in nuclear power generation.
