D defs.my
Entry 3 senses Webster, 1913

Chronometer

· Chro·nom·e·ter · IPA /krə(ʊ)ˈnɒmɪtər/
01 n. An instrument for measuring time; a timekeeper.
  1. 1.
    An instrument for measuring time; a timekeeper.
  2. 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. 3.
    A metronome.(Mus.)
Phrases & compounds
Box chronometer — See under Box.
Pocket chronometer — a chronometer in the form of a large watch.
To rate a chronometer — See Rate, v. t.