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protium Line breaks: pro|tium
Pronunciation: /ˈprəʊtɪəm/

Definition of protium in English:


[mass noun] Chemistry
The common, stable isotope of hydrogen, as distinct from deuterium and tritium.
Example sentences
  • The three isotopes are sometimes known by the names of protium, deuterium, and tritium.
  • His hypothesis was that the lighter and more abundant protium isotope would evaporate more quickly than the heavier hydrogen - 2 isotope.


1930s: modern Latin, from Greek prōtos 'first'.

Words that rhyme with protium

promethium • lithium
Definition of protium in:
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