Usually means: Isotopes of hydrogen with neutrons.
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We found 19 dictionaries that define the word heavy hydrogen:

General (14 matching dictionaries)
  1. heavy hydrogen: Merriam-Webster
  2. heavy hydrogen: Oxford Learner's Dictionaries
  3. heavy hydrogen: American Heritage Dictionary of the English Language
  4. heavy hydrogen: Collins English Dictionary
  5. heavy hydrogen: Vocabulary.com
  6. heavy hydrogen: Wiktionary
  7. heavy hydrogen: The Wordsmyth English Dictionary-Thesaurus
  8. heavy hydrogen: Infoplease Dictionary
  9. heavy hydrogen: Dictionary.com
  10. Heavy hydrogen: Wikipedia, the Free Encyclopedia
  11. heavy hydrogen: Rhymezone
  12. heavy hydrogen: FreeDictionary.org
  13. heavy hydrogen: Mnemonic Dictionary
  14. heavy hydrogen: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. heavy hydrogen: Encyclopedia

Medicine (3 matching dictionaries)
  1. heavy hydrogen: Merriam-Webster Medical Dictionary
  2. online medical dictionary (No longer online)
  3. heavy hydrogen: Medical dictionary

Science (1 matching dictionary)
  1. Heavy Hydrogen: Eric Weisstein's World of Physics

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Definitions from Wiktionary (heavy hydrogen)

▸ noun:  deuterium.

Similar:
deuterium, semi-heavy water, heavywater, heavy-water, semiheavy water, hydrogen-1, hydrogenium, hydrium, hydrogen gas, hydrogen, more...

Opposite:
light hydrogen, protium

▸ Words similar to heavy hydrogen

▸ Usage examples for heavy hydrogen

▸ Idioms related to heavy hydrogen

▸ Wikipedia articles (New!)

▸ Words that often appear near heavy hydrogen

▸ Rhymes of heavy hydrogen

▸ Invented words related to heavy hydrogen

Similar:
deuterium, semi-heavy water, heavywater, heavy-water, semiheavy water, hydrogen-1, hydrogenium, hydrium, hydrogen gas, hydrogen, more...

Opposite:
light hydrogen, protium



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