chronometern.

/krə(ʊ)ˈnɒmɪtə/

/krɒˈnɒmɪtə/

Etymology: < Greek χρόνος time + -meter comb. form². Compare French chronomètre (1701).

a. An instrument for measuring time; spec. applied to time-keepers adjusted to keep accurate time in all variations of temperature. They differ from watches in having a more perfect escapement and a compensation balance, and are used for determining longitude at sea, and for other exact observation.Some watches are named half-chronometers.

ΘΚΠ

the world > time > instruments for measuring time > [noun] > chronometer

longitude1665

longitude watch1670

chronometer1714

sea-watch1768

watch1778

box chronometer1789

oligochronometer1857

society > travel > travel by water > vessel, ship, or boat > equipment of vessel > navigational aids > [noun] > chronometer

chronometer1714

sea-watch1768

1714 W. Derham Physico-theol. (ed. 2) i. iv. 28 According to my own Observations made with..a very accurate Pendulum Chronometer.

1780 J. Arnold (title) Account..of a Pocket Chronometer, made on a new construction.

1786 J. Bonnycastle Introd. Astron. 155 Method for finding the longitude of places..by means of a chronometer.

1812 R. Woodhouse Elem. Treat. Astron. viii. 49 The time of the transit is to be marked by a clock or chronometer.

1855 R. W. Emerson Fort. Repub. in Wks. (1906) III. 387 The sailors sail by chronometers that do not lose two or three seconds in a year.

b. transferred and figurative. ‘Time-measurer’.

ΚΠ

1836 N. Wiseman 12 Lect. Sci. & Relig. I. vi. 360 Deluc was the first..to observe and collect such data, to which he gave the name of Chronometers.

1872 J. Yeats Techn. Hist. Commerce 190 Sun and stars, whose rising and setting formed the grand chronometer of Nature.

†2. Music. An instrument for indicating the time or movement of a composition; a metronome v.

ΘΚΠ

the world > time > instruments for measuring time > [noun] > metronome

plexichronometer1786

metronome1816

chronometer1837

plummet1844

society > leisure > the arts > music > musical sound > duration of notes > tempo > [noun] > metronome

metrometer1769

plexichronometer1786

rhythmometer1812

metronome1816

chronometer1837

plummet1844

accentuator?1845

M1904

1837 Penny Cycl. VII. 135/2 The musical chronometer is by no means a modern contrivance.

Compounds

C1. General attributive.

chronometer-balance n.

chronometer-box n.

ΚΠ

1878 A. H. Markham Great Frozen Sea v. 63 A chronometer-box was picked up, but empty.

chronometer-maker n.

ΚΠ

1837 Penny Cycl. VII. 135/2 The most eminent chronometer-makers in this country.

C2.

chronometer-escapement n. an escapement in which the free movement of the balance is opposed by the wheels at only one point in a complete oscillation.

ΚΠ

1874 E. H. Knight Amer. Mech. Dict. I. 548/1 The chronometer escapement..is the most perfect, delicate, and satisfactory in its operation, of all the escapements.

This entry has not yet been fully updated (first published 1889; most recently modified version published online December 2021).

单词	chronometer
释义	chronometern. /krə(ʊ)ˈnɒmɪtə//krɒˈnɒmɪtə/ Etymology: < Greek χρόνος time + -meter comb. form². Compare French chronomètre (1701). 1. a. An instrument for measuring time; spec. applied to time-keepers adjusted to keep accurate time in all variations of temperature. They differ from watches in having a more perfect escapement and a compensation balance, and are used for determining longitude at sea, and for other exact observation.Some watches are named half-chronometers. ΘΚΠ the world > time > instruments for measuring time > [noun] > chronometer longitude1665 longitude watch1670 chronometer1714 sea-watch1768 watch1778 box chronometer1789 oligochronometer1857 society > travel > travel by water > vessel, ship, or boat > equipment of vessel > navigational aids > [noun] > chronometer chronometer1714 sea-watch1768 1714 W. Derham Physico-theol. (ed. 2) i. iv. 28 According to my own Observations made with..a very accurate Pendulum Chronometer. 1780 J. Arnold (title) Account..of a Pocket Chronometer, made on a new construction. 1786 J. Bonnycastle Introd. Astron. 155 Method for finding the longitude of places..by means of a chronometer. 1812 R. Woodhouse Elem. Treat. Astron. viii. 49 The time of the transit is to be marked by a clock or chronometer. 1855 R. W. Emerson Fort. Repub. in Wks. (1906) III. 387 The sailors sail by chronometers that do not lose two or three seconds in a year. b. transferred and figurative. ‘Time-measurer’. ΚΠ 1836 N. Wiseman 12 Lect. Sci. & Relig. I. vi. 360 Deluc was the first..to observe and collect such data, to which he gave the name of Chronometers. 1872 J. Yeats Techn. Hist. Commerce 190 Sun and stars, whose rising and setting formed the grand chronometer of Nature. †2. Music. An instrument for indicating the time or movement of a composition; a metronome v. ΘΚΠ the world > time > instruments for measuring time > [noun] > metronome plexichronometer1786 metronome1816 chronometer1837 plummet1844 society > leisure > the arts > music > musical sound > duration of notes > tempo > [noun] > metronome metrometer1769 plexichronometer1786 rhythmometer1812 metronome1816 chronometer1837 plummet1844 accentuator?1845 M1904 1837 Penny Cycl. VII. 135/2 The musical chronometer is by no means a modern contrivance. Compounds C1. General attributive. chronometer-balance n. chronometer-box n. ΚΠ 1878 A. H. Markham Great Frozen Sea v. 63 A chronometer-box was picked up, but empty. chronometer-maker n. ΚΠ 1837 Penny Cycl. VII. 135/2 The most eminent chronometer-makers in this country. C2. chronometer-escapement n. an escapement in which the free movement of the balance is opposed by the wheels at only one point in a complete oscillation. ΚΠ 1874 E. H. Knight Amer. Mech. Dict. I. 548/1 The chronometer escapement..is the most perfect, delicate, and satisfactory in its operation, of all the escapements. This entry has not yet been fully updated (first published 1889; most recently modified version published online December 2021). < n.1714
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