electron

noun
elec·​tron | \ i-ˈlek-ˌträn How to pronounce electron (audio) \

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

Examples of electron in a Sentence

Recent Examples on the Web

Scientists discovered in 1912 that subatomic particles — the building blocks of matter, such as protons, electrons, muons, neutrinos, and quarks — hit the Earth every day. Brian Resnick, Vox, "10 science stories in 2018 that made us go, “Whoa, that’s awesome”," 18 Dec. 2018 Its clever direct-drive gearbox and arrangement of motors and clutches help propel the car partially, or solely, on electrons, and the integration of all the pieces is seamless. Car and Driver, "2019 10Best Cars," 28 Nov. 2018 Scientists have observed this phenomenon in tiny objects such as atoms and electrons. Gabriel Popkin, Science | AAAS, "Einstein’s ‘spooky action at a distance’ spotted in objects almost big enough to see," 25 Apr. 2018 The other one is the release of electrons as hydrogen gas. David Grossman, Popular Mechanics, "Bacteria Could Transform Human Feces and Wastewater Into Energy," 13 Nov. 2018 The features are best explained as arising from iron that has lost a lot of electrons (in the neighborhood of 23 of its normal 26). John Timmer, Ars Technica, "Star’s dimming and brightening may indicate it’s eating a planet," 20 July 2018 The sample is vaporized via heating, and bombarded with an electron beam to ionize the molecules. Jennifer Ouellette, Ars Technica, "Study brings us one step closer to solving 1994 thallium poisoning case," 25 Dec. 2018 With quick charge tech packed in, this charger will charge your devices much quicker than the small electron trickle that comes out of your dash. Popular Mechanics Editors, Popular Mechanics, "Anker Car Charging Gear Is Over 30% Off Today," 12 Nov. 2018 Instead of applying fearsome heat and pressure, reverse fuel cells make ammonia by deftly wrangling ions and electrons. Robert F. Service, Science | AAAS, "Ammonia—a renewable fuel made from sun, air, and water—could power the globe without carbon," 12 July 2018

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.

See More

First Known Use of electron

1891, in the meaning defined above

History and Etymology for electron

electr- + -on entry 2

Keep scrolling for more

Learn More about electron

Statistics for electron

Last Updated

20 May 2019

Look-up Popularity

Time Traveler for electron

The first known use of electron was in 1891

See more words from the same year

Keep scrolling for more

More Definitions for electron

electron

noun

English Language Learners Definition of electron

physics : a very small particle of matter that has a negative charge of electricity and that travels around the nucleus of an atom

electron

noun
elec·​tron | \ i-ˈlek-ˌträn How to pronounce electron (audio) \

Kids Definition of electron

: a very small particle that has a negative charge of electricity and travels around the nucleus of an atom

electron

noun
elec·​tron | \ i-ˈlek-ˌträn How to pronounce electron (audio) \

Medical 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 9.109534 × 10−28 gram or about ¹/₁₈₃₆ that of a proton

Keep scrolling for more

More from Merriam-Webster on electron

Rhyming Dictionary: Words that rhyme with electron

Spanish Central: Translation of electron

Nglish: Translation of electron for Spanish Speakers

Britannica English: Translation of electron for Arabic Speakers

Britannica.com: Encyclopedia article about electron

Comments on electron

What made you want to look up electron? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to speak slightingly about or to degrade

Get Word of the Day daily email!

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!