pho·​to·​elec·​tron | \ ˌfō-tō-i-ˈlek-ˌträn How to pronounce photoelectron (audio) \

Definition of photoelectron

: an electron released in photoemission

Keep scrolling for more

Other Words from photoelectron

photoelectronic \ ˌfō-​tō-​i-​ˌlek-​ˈträ-​nik How to pronounce photoelectron (audio) \ adjective

Examples of photoelectron in a Sentence

Recent Examples on the Web The rest of the photon’s energy is transferred to the now free-roaming negative charge, called a photoelectron. Everyday Einstein Sabrina Stierwalt, Scientific American, "Einstein's Legacy: The Photoelectric Effect," 18 Aug. 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photoelectron.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of photoelectron

1912, in the meaning defined above

History and Etymology for photoelectron

International Scientific Vocabulary

Keep scrolling for more

Learn More about photoelectron

Time Traveler for photoelectron

Time Traveler

The first known use of photoelectron was in 1912

See more words from the same year

Statistics for photoelectron

Cite this Entry

“Photoelectron.” Dictionary, Merriam-Webster, Accessed 1 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Keep scrolling for more

More Definitions for photoelectron


pho·​to·​elec·​tron | \ ˌfōt-ō-i-ˈlek-ˌträn How to pronounce photoelectron (audio) \

Medical Definition of photoelectron

: an electron released in photoemission

Other Words from photoelectron

photoelectronic \ -​ˌlek-​ˈträn-​ik How to pronounce photoelectron (audio) \ adjective

More from Merriam-Webster on photoelectron Encyclopedia article about photoelectron

Comments on photoelectron

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


Test Your Vocabulary

February 2021 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of perdure?
Spell It

Can you spell these 10 commonly misspelled words?


Anagram puzzles meet word search.

Love words? Need even more definitions?

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