from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An electrically charged particle, especially an electron, emitted by a conducting material at high temperatures.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An electrically charged particle, either an electron or an ion, emitted by a conducting material at high temperatures
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an electrically charged particle (electron or ion) emitted by a substance at a high temperature
Sorry, no etymologies found.
The most important fact was that Mr. Richardson's opinion about the thermion-phenomenon with fixed laws was totally confirmed.