Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

photoeffect

noun
pho·to·effect | \ "+ \

Definition of photoeffect 

1 : photoelectric effect

2 : the effect of high-energy radiation (as gamma rays) on an atomic nucleus especially : photodisintegration

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for photoeffect

International Scientific Vocabulary phot- + effect

Keep scrolling for more

Learn More about photoeffect

Share photoeffect

Resources for photoeffect

Cite Time Traveler Time Traveler! Explore the year a word first appeared

Dictionary Entries near photoeffect

photodrama

photoduplication

photodynamic

photoeffect

photoelastic

photoelasticity

photoelectric

Statistics for photoeffect

Look-up Popularity

Comments on photoeffect

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

Show Comments  Hide Comments 

WORD OF THE DAY

secrete

to deposit or conceal in a hiding place

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

  • alt-573b465788319
  • Name these cookies!
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Citation

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!

Words at Play

Ask the Editors

Word Games