heavy hydrogen

American  

noun

1. either of the heavy isotopes of hydrogen, especially deuterium.

2. deuterium.

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heavy hydrogen British  

noun

1. another name for deuterium

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heavy hydrogen Scientific  

1. See deuterium

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Etymology

Origin of heavy hydrogen

First recorded in 1930–35

Example Sentences

When plants lose water to evaporation in dry weather, their leaves become enriched in a heavy hydrogen isotope, deuterium.

From Science Magazine

The usual fuel for producing controlled fusion in reactors consists of a mix of the heavy hydrogen isotopes deuterium and tritium, which may unite to make helium.

From Scientific American

It must also have been quite dry, as any water, which is naturally enriched in heavy hydrogen during its formation in interstellar space, would have raised the overall deuterium levels.

From Science Magazine

Nuclear fusion releases vast amounts of energy when heavy hydrogen atoms fuse together, but this requires a temperature of 150m C, 10 times hotter than the core of the sun.

From The Guardian

Here, the heavy hydrogen atoms merge together in a process called nuclear fusion to make helium, a bit like the reaction that takes place in the sun.

From Salon