chronometer Meaning, Definition & Usage

  1. noun an accurate clock (especially used in navigation)

WordNet

Chro*nom"e*ter noun
Etymology
Gr. time + -meter: cf. F. chronomètre.
Definitions
  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.) A metronome.

Webster 1913