Online Google Dictionary

chronometer 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/krəˈnämətər/,
Font size:

chronometers, plural;
  1. An instrument for measuring time, esp. one designed to keep accurate time in spite of motion or variations in temperature, humidity, and air pressure. Chronometers were first developed for marine navigation, being used in conjunction with astronomical observation to determine longitude

  1. an accurate clock (especially used in navigation)
  2. A marine chronometer is a clock which is precise enough to be used as a portable time standard; it can therefore be used to determine longitude by means of celestial navigation. ...
  3. (Chronometers) A chronometer watch is a kind of watch tested and certified to meet certain precision standards. In Switzerland, only timepieces certified by the COSC may use the word 'Chronometer' on them.
  4. A device for measuring time, such as a watch or clock
  5. A chronometer is a high-precision watch capable of displaying the seconds and housing a movement that has been tested over several days, in different positions and at different temperatures, by an official neutral body (COSC). ...
  6. This term refers to a precision watch that is tested in various temperatures and positions, thus meeting the accuracy standards set by C.O.S.C. in Switzerland. These watches are provided with a chronometer certifcate detailing specific test results by the C.O.S.C.
  7. An instrument, also called a calorimeter or tintometer, for determining the color of petroleum products.
  8. Technically speaking, all watches are chronometers. But for a Swiss made watch to be called a chronometer, it must meet certain very high standards set by the Swiss Official Chronometer Control (C.O.S.C.). ...
  9. A highly accurate timepiece, which has been certified by the official Swiss timing bureau, COSC.
  10. A watch that has obtained a certificate from an official neutral testing center such as "COSC" (Controle Officiel Swiss des Chronometres) or "SOCC" (Swiss office for chronometric controls) after having passed strict precision tests for accuracy. ...
  11. A chronometer is a very accurate time-keeping device that is used for determining one's longitude at sea.
  12. An accurate clock used to derive the local longitude from the position of the Sun in the sky.
  13. A watch that has been specifically designed to keep very accurate time.
  14. A mechanical device for keeping time independent of ship's motion. See Captain Cook.
  15. The designation given a watch which has met the accuracy standards of the C.O.S.C. For mechanical watches, the movement must be accurate to +6/-4 seconds a day. For quartz-based watches, movements must be accurate to +/- 0.02 seconds a day.
  16. A chronometer is simply a watch or a timepiece.
  17. n. A timekeeping instrument of high precision and accuracy.
  18. an extremely accurate clock that is relatively unaffected by movement or temperature changes
  19. A chronometer is a high-precision timepiece whose movement has been quality-tested by the Controle Officiel Suisse des Chronometres (COSC), a Swiss laboratory. ...
  20. The chronometer designation is created from the old Greek terms “Chronos” and “Metrom” and stands for extremely precise mechanical watches as they were once needed for measuring time to navigate ships and aircraft. ...
  21. extra-precise timepiece that has been tested extensively by COSC or another regulatory body.
  22. Certified that it meets C.O.S.C. specifications by running the movements through a series of test and positions.
  23. A clock or watch of the highest possible accuracy, used on ships to determine longitude
  24. A mechanical watch which has passed rigorous testing for time keeping in different positions and temperatures in a Swiss laboratory. Individually numbered and accompanied by a certificate. ...
  25. an instrument for measuring time accurately in spite of motion or varying conditions.