The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A device used in photography to synchronize the peak of a flash created by a flash lamp with the opening of the camera shutter.
- synˈchro·flashˌ adjective