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protium

[proh-tee-uh m, -shee-uh m] /ˈproʊ ti əm, -ʃi əm/
noun, Chemistry
1.
the lightest and most common isotope of hydrogen. Symbol: H 1.
Origin of protium
1930-1935
1930-35; prot- + -ium
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for protium
Historical Examples
  • That is one reason I am so interested in this protium on which you chemists are working.

    City of Endless Night Milo Hastings
  • I was prevented from doing this immediately by difficulties in the protium Works.

    City of Endless Night Milo Hastings
  • You, Colonel Armstadt, hold in your protium secret the power of Germany to continue the war against the world.

    City of Endless Night Milo Hastings
  • I was immediately installed in my new office, as Director of the protium Works.

    City of Endless Night Milo Hastings
  • A fleet of ice crushers and exploring planes were sent to locate the protium mines of the Arctic.

    City of Endless Night Milo Hastings
  • Once the passage is revealed and the protium traffic stopped, the food stores cannot last longer.

    City of Endless Night Milo Hastings
  • Nor did he possess any great knowledge of the protium mines, for he had never visited them.

    City of Endless Night Milo Hastings
  • Unless you chemists can solve the protium problem, Germany must cut her population swiftly, if we do not starve out altogether.

    City of Endless Night Milo Hastings
  • We had supposed you would have been told when you were assigned to the protium research.

    City of Endless Night Milo Hastings
British Dictionary definitions for protium

protium

/ˈprəʊtɪəm/
noun
1.
the most common isotope of hydrogen, having a mass number of 1
Word Origin
C20: New Latin, from proto- + -ium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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protium in Medicine

protium pro·ti·um (prō'tē-əm, prō'shē-)
n.
See hydrogen-1.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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protium in Science
protium
  (prō'tē-əm, -shē-əm)   
The most abundant isotope of hydrogen, having an atomic mass of 1. Its nucleus consists of a single proton. See more at hydrogen.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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11
14
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