You searched for: “chron
chron (s) (noun), chrons (pl)
The shortest interval into which geologic time is subdivided: A chron is the interval of time determined by a certain stratum of rock chosen to represent all the rocks created throughout the same period of time

To keep better time is not to know time better. Time’s mystery is not lessened by ever better clocks—it is brought only more clearly into focus.

—James Jesperson, Physicist,
National Institute for Standards and Technology
This entry is located in the following unit: chrono-, chron- (page 2)
(Greek: time, times; sequence of times)