Deuterium Meaning
/djuːˈtɪəɹɪəm/Definition, CEFR level C1, pronunciation, examples, and quiz.
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Definition
nounAn isotope of hydrogen with one proton and one neutron in each atom - 21H.
nounAn atom of this isotope.
Sentence Examples
There were about 80 deuteriums for every million protiums, and virtually no tritium.
The nuclear reactor uses deuterium to slow down the neutrons.
CEFR Practice Quiz
Hydrogen has a heavier isotope called ____, which contains one extra neutron.
CEFR Practice Quiz (Alternate)
There were about 80 ____ for every million protiums, and virtually no tritium.
Word Origin & History
From deutero- + -ium. Coined by American physical chemist Harold Urey, from Ancient Greek δεύτερος (deúteros, “second”).
Explore More C1 Vocabulary Words
CEFR Practice Quiz
Hydrogen has a heavier isotope called ____, which contains one extra neutron.
CEFR Practice Quiz (Alternate)
There were about 80 ____ for every million protiums, and virtually no tritium.