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

Sending their submarines thence in search of platinum ores they had not found platinum but a limited supply of ore containing the even more valuable protium.

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

"We had supposed you would have been told when you were assigned to the protium research."

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

The voice was speaking monotonously and the words I heard were the words of the protium formulas, the false ones I had given the Chemical Staff.

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

"What do you say about this protium ore?" he asked; "will you be able to solve the problem?"

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

A fleet of ice crushers and exploring planes were sent to locate the protium mines of the Arctic.

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

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