Origin of heavy hydrogen
First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for heavy hydrogen
Now a complete list of your uranium-refining plants, your military reactors, heavy-water and heavy-hydrogen plants, and so on.The Galaxy Primes
Edward Elmer Smith
- another name for deuterium
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- See deuterium.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.