[ foh-toh-i-lek-trik ]
/ ˌfoʊ toʊ ɪˈlɛk trɪk /


pertaining to the electronic or other electric effects produced by light.
Sometimes pho·to·e·lec·tri·cal .

Origin of photoelectric

First recorded in 1860–65; photo- + electric

OTHER WORDS FROM photoelectric

pho·to·e·lec·tri·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for photoelectric

  • He has photoelectric vision, and a picture of what that aisle is supposed to look like.

    The Cosmic Computer|Henry Beam Piper
  • Two photoelectric robot machine guns followed each movement of the duelists.

    Thy Rocks and Rills|Robert Ernest Gilbert
  • Here's your photoelectric light key for room 2305 F. That's on the two hundred thirtieth floor.

    Stand by for Mars!|Carey Rockwell
  • He passed his hand rapidly over the photoelectric eye of the commo box.

    Null-ABC|Henry Beam Piper and John Joseph McGuire

British Dictionary definitions for photoelectric



/ (ˌfəʊtəʊɪˈlɛktrɪk) /


of or concerned with electric or electronic effects caused by light or other electromagnetic radiation

Derived forms of photoelectric

photoelectrically, adverbphotoelectricity (ˌfəʊtəʊɪlɛkˈtrɪsɪtɪ), noun
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

Medical definitions for photoelectric

[ fō′tō-ĭ-lĕktrĭk ]


Of or relating to the electric effects, especially increased conductivity, caused by light.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for photoelectric

[ fō′tō-ĭ-lĕktrĭk ]

Relating to or exhibiting to electrical effects upon exposure to light. For example, some photoelectric materials emit electrons called photoelectrons upon exposure to certain frequencies of light; others, such as photoresistors and phototransistors, change their electrical properties. See also photoelectric effect.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.