plutonium

noun

Stress: second syllable

Syllables: plu-to-ni-um (4)

English Definition

A radioactive chemical element used in nuclear reactors and weapons.

Example Sentence

Plutonium is used as a fuel in nuclear reactors.

US IPA /pluːˈtoʊniəm/
UK IPA /pluːˈtəʊniəm/