a unit of energy, equal to the energy acquired by an electron accelerating through a potential difference of one volt and equivalent to 1.602 × 10−19 joules. Abbreviations: eV, ev
- Also e·lec·tronvolt, electron-volt .
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How to use electron volt in a sentence
For comparison, the super-energetic protons in the largest particle accelerator on Earth — the Large Hadron Collider — only reach trillions of electron volts.
For comparison, protons in the largest accelerator on Earth, the Large Hadron Collider, reach mere trillions of electron volts.Record-breaking light has more than a quadrillion electron volts of energy | Emily Conover | May 21, 2021 | Science News
A search for possible sources of the 38 highest-energy gamma rays, above 398 trillion electron volts, came up empty, supporting the idea that the gamma rays came from cosmic rays that had wandered about the galaxy.The Milky Way’s newfound high-energy glow hints at the secrets of cosmic rays | Emily Conover | February 2, 2021 | Science News
British Dictionary definitions for electronvolt
a unit of energy equal to the work done on an electron accelerated through a potential difference of 1 volt. 1 electronvolt is equivalent to 1.602 × 10 –19 joule: Symbol: eV
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for electron volt
A unit used to measure the energy of subatomic particles. One electron volt is defined as the energy needed to move an electron (which has an electric charge equal to -1) across an electric potential of one volt.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.