It appears in many words related to time, such as:
* Chronology: The arrangement of events in order of time.
* Chronic: Lasting for a long time; persistent.
* Chronometer: An instrument for measuring time, especially one that is very accurate.
* Synchronize: To cause to happen at the same time.
* Anachronism: Something that is out of its proper time period.
The root chron is often used in combination with other Greek or Latin roots to create new words. For example, the word chronicle combines chron with -icle, a suffix meaning "small thing."