protium

American  

[proh-tee-uhm, -shee-uhm] / ˈproʊ ti əm, -ʃi əm /

noun

Chemistry.

1. the lightest and most common isotope of hydrogen. 1 H

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protium British  

/ ˈprəʊtɪəm /

noun

1. the most common isotope of hydrogen, having a mass number of 1

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protium Scientific  

/ prō′tē-əm,-shē-əm /

1. The most abundant isotope of hydrogen, having an atomic mass of 1. Its nucleus consists of a single proton.

2. See more at hydrogen

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Etymology

Origin of protium

First recorded in 1930–35; prot- + -ium

Example Sentences

See Examples For:

protium

My position as director of the protium works soon brought me into conference with Admiral von Kufner who was Chief of the Submarine Staff.

From City of Endless Night by Milo M. (Milo Milton) Hastings

There is but one thing you can do for us and that is to find some way to get word of the protium mines to the authorities of the World State.

From City of Endless Night by Milo M. (Milo Milton) Hastings

Even in my exalted position as head of the protium works I could not learn where the submarine docks or the passage to them was located.

From City of Endless Night by Milo M. (Milo Milton) Hastings

I had previously reported to the Chemical Staff that I had found means to increase materially the extraction percentage of the precious element protium from the crude imported ore.

From City of Endless Night by Milo M. (Milo Milton) Hastings

Nor did he possess any great knowledge of the protium mines, for he had never visited them.

From City of Endless Night by Milo M. (Milo Milton) Hastings