Hydrogen-3

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Synonym of tritium (“isotope of hydrogen”). uncountable

Synonyms

All synonyms
tritium

Etymology

So named because it is the isotope of hydrogen that has three nucleons (a proton and two neutrons).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.