Chronometer
(noun)
An instrument for measuring time, especially a highly accurate one used for navigation.
Origin:
Derived from the greek word 'chronos' meaning 'time' and 'metron' meaning 'measure'.
Examples:
- The chronometer was essential for determining the ship's position at sea.
- The chronometer was accurate to within a few seconds per day.
- The chronometer was considered a marvel of engineering and technology.
- The chronometer was regularly checked and adjusted to maintain its accuracy.
- The chronometer was an indispensable tool for long-distance navigation.