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

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Example Sentences

See Examples For:

protium

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

Once the passage is revealed and the protium traffic stopped, the food stores cannot last longer.

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

"Then," I said, speaking with studied emphasis, "I cannot proceed with the work of extracting protium."

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

The Staff discussed this and has assigned you to original research for the finding of a better method of the extraction of protium from the ore.

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

All my ingredients were tested for the presence of extracted protium, lest I be trying to "salt the mine."

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

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