Relating to the measurement of time or to instruments that measure time with great accuracy.
Derived from chronometry (the measurement of time) plus the adjective suffix -ic. The term became common in scientific and navigational contexts during the 18th and 19th centuries.
Scientists use chronometric instruments to measure everything from a heartbeat's duration to the speed of light—it's the difference between just guessing how long something takes and knowing with laser precision.
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