HyperDic: plutonium

English > 1 sense of the word plutonium:
NOUNsubstanceplutonium, Pu, atomic number 94a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons
plutonium > pronunciation
Soundspluwtow'niyahm
Rhymesabolitionism ... zirconium: 557 rhymes with ahm...
English > plutonium: 1 sense > noun 1, substance
MeaningA 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.
SynonymsPu, atomic number 94
Narrowerplutonium 239A highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel
Broaderchemical element, elementAny of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
Spanishnúmero atómico 94, plutonio, Pu, pus
Catalannúmero atòmic 94, plutoni, Pu, pus

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