TOP

Definition of photon noun from the Oxford Advanced Learner's Dictionary

photon

noun
 
/ˈfəʊtɒn/
 
/ˈfəʊtɑːn/
 (physics)
jump to other results
  1. a unit of electromagnetic energyTopics Physics and chemistryc2
    Word Originearly 20th cent.: from Greek phōs, phōt- ‘light’, on the pattern of electron.
See photon in the Oxford Advanced American DictionarySee photon in the Oxford Learner's Dictionary of Academic English
Check pronunciation: photon

Nearby words

dressing
noun
 
 
From the Topic
Food
C1
Oxford Learner's Dictionaries Word of the Day