Chronometer
Pronunciation : Chro*nom"e*ter
Part of Speech : n.
Etymology : [Gr. -meter: cf. F. chronom?tre.]
Definition : 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 for use an astronomical observations, in determining longitude, etc.
3. (Mus.)
Defn: A metronome. Box chronometer. See under Box. -- Pocket chronometer, a chronometer in the form of a large watch. -- To rate a chronometer. See Rate, v. t.
Source : Webster's Unabridged Dictionary, 1913