detunev.

Etymology: < de- prefix 2a + tune v.Previous versions of the OED give the stress as: deˈtune.

1. transitive. To alter or adjust (an oscillatory system, as a resonant circuit or a microwave cavity) so that its resonant frequency no longer coincides with the frequency of some other oscillation with which it interacts.

ΘΚΠ

society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > operate internal-combustion engine [verb (transitive)] > alter co-incidence of oscillations

time1836

detune1924

1924 [see detuning n. at Derivatives].

1963 G. Troup Masers & Lasers (ed. 2) vi. 105 Detuning the cavity centre pulls the oscillation frequency away from the molecular frequency.

2. transitive. (See quot. 1963.)

ΚΠ

1963 R. F. Webb Motorists' Dict. 75 Detune, to deliberately tamper with an engine to reduce its performance or efficiency... A high-powered racing engine that has been slightly ‘detuned’ will stand up to normal wear and tear better than a fully tuned engine. Detuning consists normally of fitting lower compression pistons, etc.

Derivatives

deˈtuned adj.

ΚΠ

1958 Oxf. Mail 23 Aug. 3/6 A new Hillman Husky powered by a detuned version of the overhead valve Minx engine.

1970 Daily Tel. 17 June 13/5 The engine is a detuned version of Rover's aluminium, 3½ litre V8.

deˈtuning n.

ΚΠ

1924 S. R. Roget Dict. Electr. Terms 60/2 Detuning (or Mistuning), the alteration of the period of oscillation of a circuit from that of the waves being dealt with.

1962 J. H. Simpson & R. S. Richards Physical Princ. Junction Transistors xiv. 358 Detuning also occurs in the external-gain control method described below.

This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2019).

单词	detune
释义	detunev. Etymology: < de- prefix 2a + tune v.Previous versions of the OED give the stress as: deˈtune. 1. transitive. To alter or adjust (an oscillatory system, as a resonant circuit or a microwave cavity) so that its resonant frequency no longer coincides with the frequency of some other oscillation with which it interacts. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > operate internal-combustion engine [verb (transitive)] > alter co-incidence of oscillations time1836 detune1924 1924 [see detuning n. at Derivatives]. 1963 G. Troup Masers & Lasers (ed. 2) vi. 105 Detuning the cavity centre pulls the oscillation frequency away from the molecular frequency. 2. transitive. (See quot. 1963.) ΚΠ 1963 R. F. Webb Motorists' Dict. 75 Detune, to deliberately tamper with an engine to reduce its performance or efficiency... A high-powered racing engine that has been slightly ‘detuned’ will stand up to normal wear and tear better than a fully tuned engine. Detuning consists normally of fitting lower compression pistons, etc. Derivatives deˈtuned adj. ΚΠ 1958 Oxf. Mail 23 Aug. 3/6 A new Hillman Husky powered by a detuned version of the overhead valve Minx engine. 1970 Daily Tel. 17 June 13/5 The engine is a detuned version of Rover's aluminium, 3½ litre V8. deˈtuning n. ΚΠ 1924 S. R. Roget Dict. Electr. Terms 60/2 Detuning (or Mistuning), the alteration of the period of oscillation of a circuit from that of the waves being dealt with. 1962 J. H. Simpson & R. S. Richards Physical Princ. Junction Transistors xiv. 358 Detuning also occurs in the external-gain control method described below. This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2019). < v.1924
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