chronometer

an extremely accurate clock that is relatively unaffected by movement or temperature changes

chronometer

A portable timepiece of great accuracy. In Britain the term is used specifically for one with a detent escapement, and in Switzerland for one with a lever escapement, which meets an official rating of timekeeping. Chronometers were originally developed in the 18thC for use at sea so that a ship's longitudinal position could be calculated accurately …...

Chronometer

A timekeeper accurate enough to be used to determine longitude by means of celestial navigation.
Found on http://en.wikipedia.org/wiki/Glossary_of_nautical_terms

Chronometer

• (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. • (n.) An instrument for measuring time; a timekeeper.
Found on http://thinkexist.com/dictionary/meaning/chronometer/

chronometer

noun an accurate clock (especially used in navigation)
Found on https://www.encyclo.co.uk/local/20974

Chronometer

Chro·nom'e·ter noun [ Greek ... time + -meter : confer French chronomètre .] 1. An instrument for measuring time; a timekeeper. 2. A portable timekeeper, with a heavy compensation balance, and usually beating half seconds; -- intended to keep time with great accuracy fo...
Found on http://www.encyclo.co.uk/webster/C/75

Chronometer

A chronometer was any instrument that measures time, as a clock, watch, or dial; but, specifically, this term is applied to those time-keepers which were used for determining the longitude at sea, or for any other purpose where an accurate measure of time was required, with great portability in the instrument. The chronometer differed from the ordi...
Found on http://www.probertencyclopaedia.com/browse/AC.HTM

Chronometer

A portable timekeeper designed for the purpose of finding a ship's longitude at sea â€` a task which calls for exceptional accuracy under widely varying climatic conditions.   Some authorities hold that only an instrument fitted with a detent escapement deserves to be called a chronometer;  others arg
Found on http://www.encyclo.co.uk/local/20450

chronometer

A portable timepiece of great accuracy. In Britain the term is used specifically for one with a detent escapement, and in Switzerland for one with a lever escapement, which meets an official rating of timekeeping. Chronometers were originally developed in the 18thC for use at sea so that a ship's longitudinal position could be calculated accuratel....
Found on http://www.antique-marks.com/antique-terms-c.html

Chronometer

A timekeeper accurate enough to be used to determine longitude by means of celestial navigation.
Found on http://en.wikipedia.org/wiki/Glossary_of_nautical_terms

chronometer

A watch that is certified to satisfy official standards of precision by having been set under various position and temperature conditions
Found on http://www.saffronart.com/sitepages/jewelry/glossary.aspx

chronometer

an accurate clock (especially used in navigation)
Found on https://www.vocabulary.com/lists/1747955

chronometer

chronometer (krunom'utur) , instrument for keeping highly accurate time, used especially in navigation. Before the advent of radio time signals it was the only device that provided the time accurately enough for a ship at sea to determine its longitude. A mechanical chronometer is a spring-drive...
Found on http://www.infoplease.com/ce6/sci/A0812140.html

chronometer

chronometer 1. In horlology, the time of day as indicated by a chronometer set to Greenwich Mean Time. 2. An instrument for measuring time; specifically applied to time-keepers adjusted to keep accurate time in all variations of temperature. 3. Chronometers are said to differ from watches by having a more perfect escapement and a compensation bala...
Found on http://www.wordinfo.info/words/index/info/view_unit/1302/9

Chronometer

Created by John Harrison, the father of modern navigation. The chronometer is a clock that is accurate enough to calculate the longitude of a ship's position. In 1763 he built such a clock and was later awarded a £20,000 prize for his invention.
Found on http://www.abc.se/~pa/uwa/glossary.htm

chronometer

Instrument for measuring time precisely, originally used at sea. It is designed to remain accurate through all conditions of temperature and pressure. The first accurate marine chronometer, capable of an accuracy of half a minute a year, was made in 1761 by John Harrison in England
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0016873.html

chronometer

portable timekeeping device of great accuracy, particularly one used for determining longitude at sea.[3 related articles]
Found on http://www.britannica.com/eb/a-z/c/81

chronometer

[n] - an accurate clock (especially used in navigation)
Found on http://www.webdictionary.co.uk/definition.php?query=chronometer
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