from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The most abundant isotope of hydrogen, H-1, having one proton in the nucleus.
from The Century Dictionary.
- noun A genus of polypetalous trees of the order Burseraceæ and tribe Bursereæ.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics The
lightestand most common isotopeof hydrogen, having a single protonand no neutrons- 11H
- noun An atom of this isotope.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun genus of chiefly tropical American trees having fragrant wood and yielding gum elemi
from Wiktionary, Creative Commons Attribution/Share-Alike License
Urey calls heavy hydrogen deuterium and ordinary hydrogen protium.
Baltic; they must have perished miserably but for the discovery of a new source of protium.
The Emperor nodded to the Chief of the Chemical Staff who arose and read the report of my solution of the protium problem.
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.
But I wanted power; and, with the secret of protium extraction in my possession, I would have control of life or death over three hundred million men.
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.
The Staff discussed this and has assigned you to original research for the finding of a better method of the extraction of protium from the ore.
After Russia had been won by the World Armies, the Germans for a time suffered chronic nitrogen starvation, as they depended on the protium derived from what remained of their agriculture and from the fisheries in the
The original use of protium had, I found, been discovered late in the Twentieth Century when the protium ores of the
All my ingredients were tested for the presence of extracted protium, lest I be trying to "salt the mine."