- 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
Examples from the Web for chronometer
Historical Examples of chronometer
We were now questioned about our longitude, and whether we had a chronometer.Ned Myers
James Fenimore Cooper
The captain kept his eyes fixed on the chronometer in his hand.In a Steamer Chair and Other Stories
The chronometer on the mantel was obscured by a thick layer of dust.Cap'n Eri
Joseph Crosby Lincoln
Faces isn't the chronometer to steer your boat to the good ones.Capt'n Davy's Honeymoon
He stood with a strained tautness, staring feverishly at the chronometer.Competition
- a timepiece designed to be accurate in all conditions of temperature, pressure, etc, used esp at 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.