DICTIONARY ENTRY
4 SYLLABLES
plutonium
/plu'toʊniəm/ · plutoʊniəm
Plutonium has 4 syllables: plu · to · ni · um.
plu
01
to
02
ni
03
um
04
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.
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