1. plutonium

noun. ['pluːˈtoʊniːəm'] 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.

Rhymes with Plutonium

• pandemonium
• harmonium
• zirconium
• polonium
• ammonium
• gonium

Sentences with plutonium

1. Noun, singular or mass
One of plutonium's disadvantages is its potential use as a nuclear weapon.