Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
photomap
photomask
photomechanical
photometry
photomicrograph
photomontage
photomosaic
photomultiplier
photon
photonegative
photonics
photonuclear
photoperiod
photoperiodism
photopheresis
photophilic
photophobia
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

photon
pho·ton [ fṓ tòn ] (plural pho·tons)


noun 
Definition:
 
quantum of electromagnetic radiation: a quantum of visible light or other form of electromagnetic radiation demonstrating both particle and wave properties. A photon has neither mass nor electric charge but possesses energy and momentum.

pho·ton·ic [ fō tónnik ] adjective
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft