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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An exceptionally precise timepiece.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A device for measuring time, such as a watch or clock

from the GNU version of the Collaborative International Dictionary of English

  • n. An instrument for measuring time; a timekeeper.
  • n. A portable timekeeper, with a heavy compensation balance, and usually beating half seconds; -- intended to keep time with great accuracy for use an astronomical observations, in determining longitude, etc.
  • n. A metronome.

from The Century Dictionary and Cyclopedia

  • n. Any instrument that measures time, or divides time into equal portions, or is used for that purpose, as a clock, watch, or dial.
  • n. Specifically, a time-keeper of great accuracy designed to be used for determining the longitude at sea, or for any other purpose where a very exact measurement of time is required.
  • n. An instrument intended to set the pace and rhythm for a piece of music; a metronome.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an accurate clock (especially used in navigation)


From Ancient Greek χρόνος (chronos, "time") + μέτρον (metron, "measure") (Wiktionary)


  • A chronometer is strapped to their wrist, but subjects reported their free-fall lasted longer than the chronometer recorded.

    Ann Reynolds: The End of Time

  • 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.

    The Truth About Dogs

  • 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.

    A Classic of the Sea

  • The ship's time is then made to correspond, -- that is to say, it must indicate twelve o'clock noon, -- after which it is compared with an exact timepiece called a chronometer, which keeps Greenwich (English) time, and the difference enables the observer to determine the longitude.

    Foot-prints of Travel or, Journeyings in Many Lands

  • It is true, chronometers were coming into general use, in large vessels, and I could work the time; but a chronometer was a thing never heard of on board the James.

    Ned Myers or, a Life Before the Mast

  • "Excuse me, aunty, it was the barometer that he was watching -- the chronometer was his watch."

    Jack Tier

  • The great invention of the chronometer, that is, a watch that can be trusted to keep a steady rate for long periods, was at this time completed by Harrison; but very few had been manufactured, and astronomers and sailors were slow to believe in the efficacy of this method of carrying time about with a ship.

    Captain Cook's Journal During the First Voyage Round the World

  • So, he outfitted everybody with a small electronic device, called a perceptual chronometer, which is basically

    NPR Topics: News

  • So, he outfitted everybody with a small electronic device, called a perceptual chronometer, which is basically a clunky wristwatch.

    NPR Topics: News

  • Only an elite few, such as chronometer connoisseurs and luxury timepiece afficionados, will covet the magic and the exceptional "savoir-faire" of the Tambour Mysterieuse.

    nst online


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