Try Our Apps


Supposedly vs. Supposably


[kruh-nom-i-ter] /krəˈnɒm ɪ tər/
a timepiece or timing device with a special mechanism for ensuring and adjusting its accuracy, for use in determining longitude at sea or for any purpose where very exact measurement of time is required.
any timepiece, especially a wristwatch, designed for the highest accuracy.
Origin of chronometer
1705-15; chrono- + -meter
Related forms
[kron-uh-me-trik] /ˌkrɒn əˈmɛ trɪk/ (Show IPA),
chronometrical, adjective
chronometrically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for chronometer
Historical Examples
  • What does a man who has had a glass too much call a chronometer?

  • "Six-thirty now," he said, and restored the chronometer to his waistcoat pocket.

    The Dop Doctor Clotilde Inez Mary Graves
  • The commander checked his chronometer as the delegates went to send their coded reports to their home worlds.

    Victory Lester del Rey
  • To find an azimuth of the sun: Note the time of taking the azimuth by chronometer.

    Lectures in Navigation Ernest Gallaudet Draper
  • There is one more very important fact to know about the chronometer.

    Lectures in Navigation Ernest Gallaudet Draper
  • It has four alarm clocks, three pairs of cuff-links and a chronometer in it!

    Left Guard Gilbert Ralph Henry Barbour
  • He lay just as, in the vision, I had seen him; the chronometer was above him and the two heavy revolvers hung underneath it.

  • "Oh, I tinker a chronometer once in a while," McPhearson answered.

  • A good deal of thought and study can be bestowed to great advantage on the "action" of a chronometer escapement.

  • He made sure of this by the ship's chronometer, which he had thoughtfully brought with him.

    The Book of Dragons Edith Nesbit
British Dictionary definitions for chronometer


a timepiece designed to be accurate in all conditions of temperature, pressure, etc, used esp at sea
Derived Forms
chronometric (ˌkrɒnəˈmɛtrɪk), chronometrical, adjective
chronometrically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for chronometer

1735, from chrono- "time" + -meter. Related: Chronometric.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
chronometer in Science
An extremely accurate clock or other timepiece. Chronometers are used in scientific experiments, navigation, and astronomical observations. It was the invention of a chronometer capable of being used aboard ship, in 1762, that allowed navigators for the first time to accurately determine their longitude at sea.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for chronometer

Some English speakers likely know this word

Word Value for chronometer

Scrabble Words With Friends