on-offadj.

Brit.

/ˌɒnˈɒf/, U.S.

/ˈɔnˈɔf/,

/ˈɑnˈɑf/

Origin: Formed within English, by compounding. Etymons: on adv., off adv.

Etymology: < on adv. + off adv. Compare earlier on and off adj., off and on adj.

1. Of a switch, control, etc.: that turns something on or off.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > circuit > device to open or close circuit > [adjective] > turning on or off

off1899

on1899

on-off1931

1931 Good Housek. (U.S. ed.) Dec. 196/3 (advt.) Combined volume control and on-off switch,—such features as these make the Crosley Litlfella the greatest of all radio values.

1958 Times Rev. Industry Oct. 92/3 Photoelectric equipment designed to perform on-off switching operations.

1992 Which? Oct. 513/1 Audible signals may be useful in some cases—the click of control knobs or on-off controls, or the sound the burners make on a gas cooker when they light.

2000 Ralph 7 July 146/3 Blender You don't need a fancy, souped-up blender with ten speeds—a simple model with an on-off switch will do.

2. = off and on adj.

ΘΚΠ

the world > time > frequency > infrequency > [adjective] > intermittent or irregular

chopping1483

wavering1488

interpolate1547

suspensive1575

off and on1583

remitting1583

intermissive1586

fluttering1590

aguisha1602

intermittent1603

irregular1608

broken1629

intermitting1643

serratile1707

serrine1707

scattering1709

serratic1753

now-and-then1762

remittent1791

fitful1810

non-periodic1836

spasmodic1837

startful1837

interlusory1853

heterochronic1854

heterochronous1854

between-whiles1859

snatchy1861

sporadic1861

spasmodical1864

catchy1869

pauseful1877

aperiodic1879

scratchy1881

nervy1884

spurty1894

off-again on-again1923

on-again off-again1946

on-off1949

1949 Proc. Royal Soc. 199 252 As the wave-number is increased the fluctuations seem to tend to an approximate on-off, or intermittent, variation.

1976 W. Greatorex Crossover 119 Over the roast lamb Amberley had made fun of Galina's on-off vegetarianism.

1993 U. Chatterjee Last Burden (1994) i. 3 The on-off rains are warm, troubled, and touch off a dreary ache in the small of the back.

This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022).

单词	on-off
释义	on-offadj. Brit. /ˌɒnˈɒf/, U.S. /ˈɔnˈɔf/, /ˈɑnˈɑf/ Origin: Formed within English, by compounding. Etymons: on adv., off adv. Etymology: < on adv. + off adv. Compare earlier on and off adj., off and on adj. 1. Of a switch, control, etc.: that turns something on or off. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > circuit > device to open or close circuit > [adjective] > turning on or off off1899 on1899 on-off1931 1931 Good Housek. (U.S. ed.) Dec. 196/3 (advt.) Combined volume control and on-off switch,—such features as these make the Crosley Litlfella the greatest of all radio values. 1958 Times Rev. Industry Oct. 92/3 Photoelectric equipment designed to perform on-off switching operations. 1992 Which? Oct. 513/1 Audible signals may be useful in some cases—the click of control knobs or on-off controls, or the sound the burners make on a gas cooker when they light. 2000 Ralph 7 July 146/3 Blender You don't need a fancy, souped-up blender with ten speeds—a simple model with an on-off switch will do. 2. = off and on adj. ΘΚΠ the world > time > frequency > infrequency > [adjective] > intermittent or irregular chopping1483 wavering1488 interpolate1547 suspensive1575 off and on1583 remitting1583 intermissive1586 fluttering1590 aguisha1602 intermittent1603 irregular1608 broken1629 intermitting1643 serratile1707 serrine1707 scattering1709 serratic1753 now-and-then1762 remittent1791 fitful1810 non-periodic1836 spasmodic1837 startful1837 interlusory1853 heterochronic1854 heterochronous1854 between-whiles1859 snatchy1861 sporadic1861 spasmodical1864 catchy1869 pauseful1877 aperiodic1879 scratchy1881 nervy1884 spurty1894 off-again on-again1923 on-again off-again1946 on-off1949 1949 Proc. Royal Soc. 199 252 As the wave-number is increased the fluctuations seem to tend to an approximate on-off, or intermittent, variation. 1976 W. Greatorex Crossover 119 Over the roast lamb Amberley had made fun of Galina's on-off vegetarianism. 1993 U. Chatterjee Last Burden (1994) i. 3 The on-off rains are warm, troubled, and touch off a dreary ache in the small of the back. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022). < adj.1931
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