chronoscope definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
an instrument for measuring very small intervals of time
Origin: chrono- plush -scope
chronoscope definition by American Heritage Dictionary
An optical instrument for the precise measurement of very small time intervals.
- chronˌo·scopˈic adjective