chronometer

IPA: krʌnˈɑmʌtɝ

A device for measuring time, particularly a precision mechanism for measuring time of day.

Examples of "chronometer" in Sentences

A chronometer is strapped to their wrist, but subjects reported their free-fall lasted longer than the chronometer recorded.
The chronometer, which is merely the least imperfect time-piece man has devised, makes possible the surest and easiest method by far of ascertaining longitude.
The evolutionary chronometer is a measure of ancient origins — it cannot pick up divergence into separate breeding lines that has occurred in the past few hundred years.