Word.ws English Dictionary

light hydrogen

light hydrogen noun: synonym of protium (“"the usual isotope of hydrogen"”).

Noun

light hydrogen (uncountable)

  1. Synonym of protium (“"the usual isotope of hydrogen"”).
    Synonyms:
    protium

Synonyms of light hydrogen

Origin of light hydrogen

So named because it is the isotope of hydrogen with the lightest atomic weight and atomic mass, having one nucleon (a single proton and no neutrons).

Questions about light hydrogen

What does light hydrogen mean?
Light hydrogen means synonym of protium (“"the usual isotope of hydrogen"”).
What part of speech is light hydrogen?
Light hydrogen is a noun.

Words near light hydrogen in the dictionary

  1. light horse
  2. light hour
  3. light hours
  4. light house
  5. light houses
  6. light hydrogen
  7. light icebreaker
  8. light icebreakers
  9. light in the loafers
  10. light in the sneakers
  11. light industries

Source and license

Adapted from Wiktionary: light hydrogen (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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