chronometer

Meanings

1. 1
   noun

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

   A wristwatch costs $20; a chronometer costs $20,000.

2. 2
   noun

   an accurate clock (especially used in navigation)

From chrono- + -meter, possibly after the model of earlier French chronomètre (“metronome”), ultimately from Ancient Greek χρόνος (khrónos, “time”) + μέτρον (métron, “meter, measuring device”).

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