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.
I can navigate, checking the chronometer by lunar observation.
I had time in the Fijis to compare my chronometer with two other chronometers.
"Oh, I tinker a chronometer once in a while," McPhearson answered.
Clay checked both the chronometer and radiodometer and then reported in.
Smash your chronometer, get mixed up with a hurricane, and then keep your eyes open for cocoanuts rising out of the sea.
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.