decouplev.

Brit.

/(ˌ)diːˈkʌpl/, U.S.

/diˈkəpəl/

Etymology: < French découple-r to uncouple: see de- prefix 1f.Previous versions of the OED give the stress as: deˈcouple.

†1. To uncouple. Obsolete. rare.

ΘΚΠ

the world > food and drink > hunting > hunting with hounds > hunt with hounds [verb (transitive)] > release hounds

uncouplec1330

to let slip1530

to cast off1602

decouple1602

unslip1611

slipa1616

unleash1671

to throw off1686

1602 2nd Pt. Returne from Pernassus (Arb.) ii. v. 32 Another company of houndes..had their couples cast off and we might heare the Huntsmen cry, horse, decouple, Auant.

a. To make the coupling between (two oscillatory systems, or two modes of oscillation of a single system) very loose, so that there is little transfer of oscillations from one to the other.

ΚΠ

1938 Wireless Engineer. Sept. 480 The time constants of the series and parallel type of filter, used for decoupling the A.V.C. bias from the grid circuit of the R.F. controlled valves, are examined.

1961 C. M. Harris & C. E. Crede Shock & Vibration Handbk. II. xxx. 27 The natural modes of vibration of a body supported by isolators may be decoupled one from another by proper orientation of the isolators. Each mode of vibration then exists independently of the others.

1964 R. F. Ficchi Electr. Interference x. 187 Another technique that is useful for decoupling power supply leads is the decoupling capacitor.

[see 'Implied in' only applies when the target is a quotation].

b. To muffle the sound or shock of (a nuclear explosion) by causing it to take place in an underground cavity.

ΘΚΠ

the world > action or operation > manner of action > lack of violence, severity, or intensity > make less violent or severe [verb (transitive)] > mitigate violence of nuclear explosion

decouple1960

1960 New Scientist 24 Nov. 1369/1 There have been claims in the United States that an explosion conducted in a large spherical cavity is greatly muffled, or ‘decoupled’.

[see 'Implied in' only applies when the target is a quotation].

Derivatives

deˈcoupling n.

ΚΠ

1931 Wireless World 19 Aug. 175/2 A large-capacity paper type condenser may have a higher internal impedance..and so give less effective de-coupling.

1940 Amateur Radio Handbk. (ed. 2) 86/2 In some cases it is necessary to use decouplings which are effective for R.F. but which allow currents of speech frequency to pass.

1960 Guardian 15 June 1/2 He wanted to know whether ‘de-coupling’ (the way of muffling underground tests) was to be tested.

1962 J. H. Simpson & R. S. Richards Physical Princ. Junction Transistors xv. 370 A collector decoupling filter, in which a resistor of value R is placed between the collector bias resistor and the power supply.

1966 New Scientist 28 July 191/3 The decoupling effects of a nuclear explosion in a large sphere..are a mystery.

Draft additions 1993

intransitive. Physics and Astronomy. To stop being coupled; to stop participating in interactions that maintain thermal equilibrium; spec. (of particles and fields) to become differentiated from or into, or into two or more kinds of entity.

ΘΚΠ

the world > matter > physics > atomic physics > particle physics > [verb (intransitive)] > desist from interaction

decouple1966

1966 Physical Rev. 148 1348/1 The multichannel problem at the poles decouples into a series of single-channel problems.

1971 Physics Bull. Sept. 518/1 Some authors have even revived the possible connection of the pomeron and the f°, in particular noting that both decouple (to a good approximation) from the s channel helicity flip amplitude.

1977 M. Rowan-Robinson Cosmol. v. 90 T < 10¹² K: muons annihilate; neutrinos and antineutrinos decouple from everything else.

1978 Nature 27 Apr. 787/3 Only muon neutrinos and antineutrinos decouple at 10¹² K, whereas electron neutrinos and antineutrinos decouple at 10¹⁰ K.

1981 J. Ellis in J. M. Mulvey Nature of Matter vi. 129 As the Universe expanded and cooled radiation and matter would eventually have decoupled.

1987 Sci. Amer. July 36/3 Matter began to decouple from radiation and the universe became transparent.

Draft additions 1993

transitive. More generally: to make separate or independent (from); to dissociate, disengage.Often in political and economic contexts.

ΚΠ

1969 Daily Tel. 19 Nov. 16/3 Russia..will not miss this great opportunity to further her consistent objective of ‘decoupling’ America from Europe.

1971 I. G. Gass et al. Understanding Earth xix. 270/1 The plates are of finite thickness and..at some depth they become decoupled from what lies beneath.

1976 Forbes 15 Jan. 53/3 He thinks lawmakers might simply ‘decouple’ benefits. That is, make future benefits depend upon wage increases or price increases, but not on both.

2021 Australian (Nexis) 12 June 17 Policies that would decouple growth from its negative environmental effects.

Draft additions October 2021

decoupling n. the action of separating from something or becoming independent; dissociation, disengagement, or withdrawal, esp. from a prior association or established process, activity, etc.; an instance of this.Often in political and economic contexts.

ΚΠ

1968 C. Bowles Memorandum to Secretary of State 25 Apr. (U.S. Declassified Documents Online) 13 When circumstances permit we might emphasize the decoupling of Pakistan and India in our policy-making.

2002 N.Y. Times (Nexis) 17 Nov. vii. 15 Her description of the extended family's torrid couplings and decouplings makes the Brezhnev era sound like an Eric Rohmer film.

2021 Business Day (S. Afr.) (Nexis) 28 Apr. 7 The decoupling of growth from resource use and emissions is fundamental to a sustainable future where our consumption of resources does not outstrip the Earth's ability to replace them.

This entry has not yet been fully updated (first published 1894; most recently modified version published online March 2022).

单词	decouple
释义	decouplev. Brit. /(ˌ)diːˈkʌpl/, U.S. /diˈkəpəl/ Etymology: < French découple-r to uncouple: see de- prefix 1f.Previous versions of the OED give the stress as: deˈcouple. †1. To uncouple. Obsolete. rare. ΘΚΠ the world > food and drink > hunting > hunting with hounds > hunt with hounds [verb (transitive)] > release hounds uncouplec1330 to let slip1530 to cast off1602 decouple1602 unslip1611 slipa1616 unleash1671 to throw off1686 1602 2nd Pt. Returne from Pernassus (Arb.) ii. v. 32 Another company of houndes..had their couples cast off and we might heare the Huntsmen cry, horse, decouple, Auant. 2. a. To make the coupling between (two oscillatory systems, or two modes of oscillation of a single system) very loose, so that there is little transfer of oscillations from one to the other. ΚΠ 1938 Wireless Engineer. Sept. 480 The time constants of the series and parallel type of filter, used for decoupling the A.V.C. bias from the grid circuit of the R.F. controlled valves, are examined. 1961 C. M. Harris & C. E. Crede Shock & Vibration Handbk. II. xxx. 27 The natural modes of vibration of a body supported by isolators may be decoupled one from another by proper orientation of the isolators. Each mode of vibration then exists independently of the others. 1964 R. F. Ficchi Electr. Interference x. 187 Another technique that is useful for decoupling power supply leads is the decoupling capacitor. [see 'Implied in' only applies when the target is a quotation]. b. To muffle the sound or shock of (a nuclear explosion) by causing it to take place in an underground cavity. ΘΚΠ the world > action or operation > manner of action > lack of violence, severity, or intensity > make less violent or severe [verb (transitive)] > mitigate violence of nuclear explosion decouple1960 1960 New Scientist 24 Nov. 1369/1 There have been claims in the United States that an explosion conducted in a large spherical cavity is greatly muffled, or ‘decoupled’. [see 'Implied in' only applies when the target is a quotation]. Derivatives deˈcoupling n. ΚΠ 1931 Wireless World 19 Aug. 175/2 A large-capacity paper type condenser may have a higher internal impedance..and so give less effective de-coupling. 1940 Amateur Radio Handbk. (ed. 2) 86/2 In some cases it is necessary to use decouplings which are effective for R.F. but which allow currents of speech frequency to pass. 1960 Guardian 15 June 1/2 He wanted to know whether ‘de-coupling’ (the way of muffling underground tests) was to be tested. 1962 J. H. Simpson & R. S. Richards Physical Princ. Junction Transistors xv. 370 A collector decoupling filter, in which a resistor of value R is placed between the collector bias resistor and the power supply. 1966 New Scientist 28 July 191/3 The decoupling effects of a nuclear explosion in a large sphere..are a mystery. Draft additions 1993 intransitive. Physics and Astronomy. To stop being coupled; to stop participating in interactions that maintain thermal equilibrium; spec. (of particles and fields) to become differentiated from or into, or into two or more kinds of entity. ΘΚΠ the world > matter > physics > atomic physics > particle physics > [verb (intransitive)] > desist from interaction decouple1966 1966 Physical Rev. 148 1348/1 The multichannel problem at the poles decouples into a series of single-channel problems. 1971 Physics Bull. Sept. 518/1 Some authors have even revived the possible connection of the pomeron and the f°, in particular noting that both decouple (to a good approximation) from the s channel helicity flip amplitude. 1977 M. Rowan-Robinson Cosmol. v. 90 T < 10¹² K: muons annihilate; neutrinos and antineutrinos decouple from everything else. 1978 Nature 27 Apr. 787/3 Only muon neutrinos and antineutrinos decouple at 10¹² K, whereas electron neutrinos and antineutrinos decouple at 10¹⁰ K. 1981 J. Ellis in J. M. Mulvey Nature of Matter vi. 129 As the Universe expanded and cooled radiation and matter would eventually have decoupled. 1987 Sci. Amer. July 36/3 Matter began to decouple from radiation and the universe became transparent. Draft additions 1993 transitive. More generally: to make separate or independent (from); to dissociate, disengage.Often in political and economic contexts. ΚΠ 1969 Daily Tel. 19 Nov. 16/3 Russia..will not miss this great opportunity to further her consistent objective of ‘decoupling’ America from Europe. 1971 I. G. Gass et al. Understanding Earth xix. 270/1 The plates are of finite thickness and..at some depth they become decoupled from what lies beneath. 1976 Forbes 15 Jan. 53/3 He thinks lawmakers might simply ‘decouple’ benefits. That is, make future benefits depend upon wage increases or price increases, but not on both. 2021 Australian (Nexis) 12 June 17 Policies that would decouple growth from its negative environmental effects. Draft additions October 2021 decoupling n. the action of separating from something or becoming independent; dissociation, disengagement, or withdrawal, esp. from a prior association or established process, activity, etc.; an instance of this.Often in political and economic contexts. ΚΠ 1968 C. Bowles Memorandum to Secretary of State 25 Apr. (U.S. Declassified Documents Online) 13 When circumstances permit we might emphasize the decoupling of Pakistan and India in our policy-making. 2002 N.Y. Times (Nexis) 17 Nov. vii. 15 Her description of the extended family's torrid couplings and decouplings makes the Brezhnev era sound like an Eric Rohmer film. 2021 Business Day (S. Afr.) (Nexis) 28 Apr. 7 The decoupling of growth from resource use and emissions is fundamental to a sustainable future where our consumption of resources does not outstrip the Earth's ability to replace them. This entry has not yet been fully updated (first published 1894; most recently modified version published online March 2022). < v.1602
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