hydrogen-1


n.

The most abundant isotope of hydrogen, having atomic mass 1.protium

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Example sentences from the Web for hydrogen-1

  • An atom of lithium-7 plus an atom of hydrogen-1 yields two atoms of helium-4 and plenty of energy.

    Unwise Child|Gordon Randall Garrett