heavy hydrogen

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Related to heavy hydrogen: tritium

heavy hydrogen

An isotope of hydrogen with mass number greater than 1; deuterium or tritium.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

heavy hydrogen

(Elements & Compounds) another name for deuterium

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

heav′y hy′drogen

either of the heavy isotopes of hydrogen, esp. deuterium.

[1930–35]

heav·y hydrogen

(hĕv′ē)

See deuterium.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Noun

heavy hydrogen - an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)

deuterium

isotope - one of two or more atoms with the same atomic number but with different numbers of neutrons

hydrogen atom - an atom of hydrogen

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Deuterium (D), also known as heavy hydrogen, is an isotope of hydrogen.

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Elydrogen has two isotopes--normal hydrogen, with a mass of one, and deuterium or "heavy hydrogen," with a mass of two.

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This produces almost no neutrons but instead fast, heavy electrons (muons), since it is based on nuclear reactions in ultra-dense heavy hydrogen (deuterium).

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Already, according to one report, Rosetta has found unusual levels of heavy hydrogen, indicating that primordial comets didn't provide the Earth's oceans with water.

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Water vapor streaming off the comet contains a higher fraction of "heavy hydrogen'' than the water on Earth does, scientists reported Wednesday.

Comet data clears up debate on Earth's water

Hydrogen as fuel is processed from deuterium, or heavy hydrogen, which is abundant in the Philippines, Marcos said.