English Dictionary

deuterium

/djuːˈtɪəɹɪəm/

noun

(physics) An isotope of hydrogen formed of one proton and one neutron in each atom - ²₁H. / An atom of this isotope.

Deuterium is used as a fuel in nuclear fusion reactions.

意味（1）

(physics) An isotope of hydrogen formed of one proton and one neutron in each atom - ²₁H.

Heavy water is heavy because it contains deuterium.

意味（2）

An atom of this isotope.

There were about 80 deuteriums for every million protiums, and virtually no tritium.