- the lightest and most common isotope of hydrogen. Symbol: H1
Origin of protium
Examples from the Web for protium
Historical Examples of protium
I was prevented from doing this immediately by difficulties in the Protium Works.
We had supposed you would have been told when you were assigned to the protium research.
That is one reason I am so interested in this protium on which you chemists are working.
Nor did he possess any great knowledge of the protium mines, for he had never visited them.
I was immediately installed in my new office, as Director of the Protium Works.
- the most common isotope of hydrogen, having a mass number of 1
Word Origin for protium
- The most abundant isotope of hydrogen, having an atomic mass of 1. Its nucleus consists of a single proton. See more at hydrogen.