Definition of deuterium in English:

deuterium

noun djuːˈtɪərɪəmˌdjuˈtɪriəm

mass nounChemistry

A stable isotope of hydrogen with a mass approximately twice that of the usual isotope.
Deuterium atoms have a neutron as well as a proton in the nucleus, and the isotope is present to about 1 part in 6,000 in naturally occurring hydrogen. It is used as a fuel in thermonuclear bombs, and heavy water (D₂O) is used as a moderator in nuclear reactors
Example sentencesExamples
- We know that for a fact because we've measured the isotope ratio of deuterium and hydrogen.
- The most easily attained fusion reaction involves fusing nuclei of the two isotopes of hydrogen, deuterium and tritium, to make nuclei of helium.
- The basic principles are relatively simple to lay out: a high energy laser is used to heat and compress a small amount of deuterium, a stable isotope of hydrogen.
- If necessary, stocks of deuterium, tritium, hydrogen, and helium were supplied from on-board stores.
- Although many nuclei can be fused, this subject normally refers to fusion of hydrogen isotopes deuterium or tritium to form helium.

Origin

1930s: modern Latin, from Greek deuteros 'second'.

Definition of deuterium in US English:

deuterium

nounˌdyo͞oˈtirēəmˌdjuˈtɪriəm

Chemistry

A stable isotope of hydrogen with a mass approximately twice that of the usual isotope.
Deuterium atoms have a neutron as well as a proton in the nucleus, and the isotope is present to about 1 part in 6,000 in naturally occurring hydrogen. It is used as a fuel in thermonuclear bombs, and heavy water (D₂O) is used as a moderator in nuclear reactors
Example sentencesExamples
- The most easily attained fusion reaction involves fusing nuclei of the two isotopes of hydrogen, deuterium and tritium, to make nuclei of helium.
- The basic principles are relatively simple to lay out: a high energy laser is used to heat and compress a small amount of deuterium, a stable isotope of hydrogen.
- Although many nuclei can be fused, this subject normally refers to fusion of hydrogen isotopes deuterium or tritium to form helium.
- We know that for a fact because we've measured the isotope ratio of deuterium and hydrogen.
- If necessary, stocks of deuterium, tritium, hydrogen, and helium were supplied from on-board stores.

Origin

1930s: modern Latin, from Greek deuteros ‘second’.

单词	deuterium
释义	Definition of deuterium in English: deuterium noun djuːˈtɪərɪəmˌdjuˈtɪriəm mass nounChemistry A stable isotope of hydrogen with a mass approximately twice that of the usual isotope. Deuterium atoms have a neutron as well as a proton in the nucleus, and the isotope is present to about 1 part in 6,000 in naturally occurring hydrogen. It is used as a fuel in thermonuclear bombs, and heavy water (D₂O) is used as a moderator in nuclear reactors Example sentencesExamples We know that for a fact because we've measured the isotope ratio of deuterium and hydrogen. The most easily attained fusion reaction involves fusing nuclei of the two isotopes of hydrogen, deuterium and tritium, to make nuclei of helium. The basic principles are relatively simple to lay out: a high energy laser is used to heat and compress a small amount of deuterium, a stable isotope of hydrogen. If necessary, stocks of deuterium, tritium, hydrogen, and helium were supplied from on-board stores. Although many nuclei can be fused, this subject normally refers to fusion of hydrogen isotopes deuterium or tritium to form helium. Origin 1930s: modern Latin, from Greek deuteros 'second'. Definition of deuterium in US English: deuterium nounˌdyo͞oˈtirēəmˌdjuˈtɪriəm Chemistry A stable isotope of hydrogen with a mass approximately twice that of the usual isotope. Deuterium atoms have a neutron as well as a proton in the nucleus, and the isotope is present to about 1 part in 6,000 in naturally occurring hydrogen. It is used as a fuel in thermonuclear bombs, and heavy water (D₂O) is used as a moderator in nuclear reactors Example sentencesExamples The most easily attained fusion reaction involves fusing nuclei of the two isotopes of hydrogen, deuterium and tritium, to make nuclei of helium. The basic principles are relatively simple to lay out: a high energy laser is used to heat and compress a small amount of deuterium, a stable isotope of hydrogen. Although many nuclei can be fused, this subject normally refers to fusion of hydrogen isotopes deuterium or tritium to form helium. We know that for a fact because we've measured the isotope ratio of deuterium and hydrogen. If necessary, stocks of deuterium, tritium, hydrogen, and helium were supplied from on-board stores. Origin 1930s: modern Latin, from Greek deuteros ‘second’.
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