hydrogen-1


n.

The most abundant isotope of hydrogen, having atomic mass 1.protium
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Examples 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