A naturally radioactive, silvery, metallic transuranic element, occurring in uranium [ores] and produced artificially by neutron bombardment of uranium. Its longest-lived [isotope] is Pu [244] with a half-life of 76 million years.

]]>https://definedictionarymeaning.com/topic/121534/plutoniumRSS for NodeMon, 08 Jun 2026 14:08:09 GMTWed, 02 Oct 2019 04:01:35 GMT60a chemical element that is a metal used in the production of nuclear power, and in nuclear weapons

]]>https://definedictionarymeaning.com/post/377226https://definedictionarymeaning.com/post/377226Mon, 17 May 2021 00:24:31 GMTThe chemical element of atomic number 94, a dense silvery radioactive metal of the actinide series, used as a fuel in nuclear reactors and as an explosive in nuclear fission weapons. Plutonium only occurs in trace amounts in nature but is manufactured in nuclear reactors from uranium-238.

]]>https://definedictionarymeaning.com/post/231447https://definedictionarymeaning.com/post/231447Mon, 02 Aug 2021 02:34:05 GMT