Definition of electron
: an elementary particle consisting of a charge of negative electricity equal to about 1.602 × 10−19 coulomb and having a mass when at rest of about 9.109 × 10−31 kilogram or about 1⁄1836 that of a proton
Recent Examples of electron from the Web
That’s the kidney on an electron-microscopic level.
Finally, physicists must measure the electrons' energies.
The bonding between the carbon and the nitrogen leaves a rather unhappy electron.
At 14 trillion electron volts, the Large Hadron Collider would either find the Higgs boson or something else because the Standard Model broke down at those energies.
In 2015, the most sophisticated of these tests, which involved measuring entangled electrons 1.3 kilometers apart, showed once again that spooky action is real.
The contraption zaps electrons through a circular tube at near the speed of light, generating intense light beams.
A flywheel could physically drain excess electricity off the grid, turning the sun’s electrons into movement and heat.
This undated electron microscope image made available by the Centers for Disease Control and Prevention shows human immunodeficiency virus particles (virions).
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'electron'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of electron
electr- + 2-on
First Known Use: 1891See Words from the same year
ELECTRON Defined for English Language Learners
Definition of electron for English Language Learners
physics : a very small particle of matter that has a negative charge of electricity and that travels around the nucleus of an atom
ELECTRON Defined for Kids
Definition of electron for Students
: a very small particle that has a negative charge of electricity and travels around the nucleus of an atom
Seen and Heard
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