overpressuren.

Brit.

/ˌəʊvəˈprɛʃə/, U.S.

/ˌoʊvərˈprɛʃər/

Origin: Formed within English, by derivation. Etymons: over- prefix, pressure n.¹

Etymology: < over- prefix + pressure n.¹

1. The action or fact of pressing or being pressed too hard; excessive pressure, esp. of work; stress. Now rare.

ΘΚΠ

society > authority > rule or government > oppression > [noun]

threat971

duressc1320

defoulc1330

tyrantry1340

tyrannyc1368

oppressinga1382

overleadinga1382

tyrandisea1382

overlayingc1384

oppression1387

oversettinga1398

thronga1400

overpressingc1450

impressionc1470

tyrantshipc1470

tyrannesse?a1475

aggravation1481

defouling1483

supprissiona1500

oppressmentc1537

conculcation1547

iron hand?1570

thrall1578

tyrannizing1589

tyranting1596

ingrating1599

pressure1616

regrate1621

overpressure1644

slavishness1684

iron heel1798

the world > action or operation > difficulty > hindrance > types or manners of hindrance > [noun] > encumberment > burdensomeness > overburdening or being overburdened

overchargingc1460

suffocation1567

overburdening1580

overpressure1644

overpress1846

overtaxation1881

overweightedness1895

1644 J. Vicars Jehovah-jireh 147 Being forced at last..by over-pressure of numbers.

1805–6 W. Wordsworth Prel. (1959) xi. 432 Until that natural graciousness of mind Gave way to over-pressure [1850 overpressure] of the times And their disastrous issues.

1834 H. Martineau Moral Many Fables ii. 37 The over-pressure of the people upon its food.

1884 Pall Mall Gaz. 17 Sept. 7/1 Some of the little victims of over-pressure had, at any rate, enough spirit in them to ‘green’ their visitor pretty freely.

1899 T. C. Allbutt et al. Syst. Med. VII. 470 Overpressure in education has also been alleged as a factor.

1915 Mind 24 128 Such questions as..the over-pressure of modern life.

1921 Q. Publ. Amer. Statist. Assoc. 17 717 There is a reason for thinking..that much of the evil ascribed to ‘over-pressure’ is really due to over-feeding and drinking.

1942 A. Gates et al. Educ. Psychol. xxi. 767 That overpressure is fairly widespread is indicated by the finding of the Commonwealth Teacher Training Study 16 that teachers must perform 1001 separate tasks in discharging their functions.

2. spec. Fluid or gas pressure in excess of that which is normal or allowed for; an instance of this.

ΘΚΠ

the world > matter > physics > mechanics > force > [noun] > pressure > fluid pressure > specific

overpressure1819

head of steam1820

pressure head1856

velocity head1884

velocity pressure1904

impact pressure1919

impact head1928

1819 Morning Chron. 30 Apr. 3 The accident was occasioned by an over pressure of steam on the boiler.

1826 Examiner 24 Sept. 613 They must take care that the result be not sooner or later like to that from over-pressure in a steam-engine.

1861 Philos. Trans. (Royal Soc.) 151 137 The obvious cause is over-pressure; and it is not wonderful that, when multitudes of boilers are worked at a very considerable proportion of the pressure calculated to burst them when new, accidents occasionally occur.

1910 Q. Jrnl. Econ. 24 571 The blowing up of boilers through over-pressure.

1962 Trans. Faraday Soc. 58 194 A quantitative hydrogenation of a solution of the polymer in benzene was attempted using..an over-pressure of hydrogen (ca. 700 mm).

1977 Sci. Amer. Mar. 82/1 Just above the vocal folds are the two ‘false’ vocal folds, which are engaged when someone holds his breath with an over-pressure of air in the lungs.

1998 Canad. Jrnl. Earth Sci. 35 759 Vein formation was rapid and is consistent with models of hydrofracturing due to fluid overpressure.

3. Physics. The difference between the (highest) instantaneous pressure at a point subjected to a shock wave and the ambient atmospheric pressure.

ΘΚΠ

the world > matter > gas > air > [noun] > air-wave > large pressure wave > difference in pressure caused by

overpressure1955

1955 Communications Pure & Appl. Math. 8 340 We evaluated the D corresponding to the shock over~pressure of 5°.

1975 Sci. Amer. July 15/3 Overpressure is proportional to the energy released by a nuclear charge and is inversely proportional to the cube of the distance from the point of explosion.

1991 Offshore Engineer Sept. 126/1 The system..had to be capable of surviving blast overpressures in excess of 1.0bar.

Compounds

overpressure valve n. a valve which opens to release gas when the pressure exceeds a preset amount; a safety valve.

ΚΠ

1875 U.S. Patent No. 166895 17 Aug. J is a safety or over-pressure valve.

1983 Skin Diver (Nexis) 32 64 The Pro Line BC Jacket has self-adjusting side panels,..overpressure valve with dump, D-rings, quick release buckle on waist and chest, and expandable pockets.

2002 Consumer Rep. (Nexis) 67 44 Overpressure valves used with buoyancy control system could stick in open position and cause diver to drown.

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

单词	overpressure
释义	overpressuren. Brit. /ˌəʊvəˈprɛʃə/, U.S. /ˌoʊvərˈprɛʃər/ Origin: Formed within English, by derivation. Etymons: over- prefix, pressure n.¹ Etymology: < over- prefix + pressure n.¹ 1. The action or fact of pressing or being pressed too hard; excessive pressure, esp. of work; stress. Now rare. ΘΚΠ society > authority > rule or government > oppression > [noun] threat971 duressc1320 defoulc1330 tyrantry1340 tyrannyc1368 oppressinga1382 overleadinga1382 tyrandisea1382 overlayingc1384 oppression1387 oversettinga1398 thronga1400 overpressingc1450 impressionc1470 tyrantshipc1470 tyrannesse?a1475 aggravation1481 defouling1483 supprissiona1500 oppressmentc1537 conculcation1547 iron hand?1570 thrall1578 tyrannizing1589 tyranting1596 ingrating1599 pressure1616 regrate1621 overpressure1644 slavishness1684 iron heel1798 the world > action or operation > difficulty > hindrance > types or manners of hindrance > [noun] > encumberment > burdensomeness > overburdening or being overburdened overchargingc1460 suffocation1567 overburdening1580 overpressure1644 overpress1846 overtaxation1881 overweightedness1895 1644 J. Vicars Jehovah-jireh 147 Being forced at last..by over-pressure of numbers. 1805–6 W. Wordsworth Prel. (1959) xi. 432 Until that natural graciousness of mind Gave way to over-pressure [1850 overpressure] of the times And their disastrous issues. 1834 H. Martineau Moral Many Fables ii. 37 The over-pressure of the people upon its food. 1884 Pall Mall Gaz. 17 Sept. 7/1 Some of the little victims of over-pressure had, at any rate, enough spirit in them to ‘green’ their visitor pretty freely. 1899 T. C. Allbutt et al. Syst. Med. VII. 470 Overpressure in education has also been alleged as a factor. 1915 Mind 24 128 Such questions as..the over-pressure of modern life. 1921 Q. Publ. Amer. Statist. Assoc. 17 717 There is a reason for thinking..that much of the evil ascribed to ‘over-pressure’ is really due to over-feeding and drinking. 1942 A. Gates et al. Educ. Psychol. xxi. 767 That overpressure is fairly widespread is indicated by the finding of the Commonwealth Teacher Training Study 16 that teachers must perform 1001 separate tasks in discharging their functions. 2. spec. Fluid or gas pressure in excess of that which is normal or allowed for; an instance of this. ΘΚΠ the world > matter > physics > mechanics > force > [noun] > pressure > fluid pressure > specific overpressure1819 head of steam1820 pressure head1856 velocity head1884 velocity pressure1904 impact pressure1919 impact head1928 1819 Morning Chron. 30 Apr. 3 The accident was occasioned by an over pressure of steam on the boiler. 1826 Examiner 24 Sept. 613 They must take care that the result be not sooner or later like to that from over-pressure in a steam-engine. 1861 Philos. Trans. (Royal Soc.) 151 137 The obvious cause is over-pressure; and it is not wonderful that, when multitudes of boilers are worked at a very considerable proportion of the pressure calculated to burst them when new, accidents occasionally occur. 1910 Q. Jrnl. Econ. 24 571 The blowing up of boilers through over-pressure. 1962 Trans. Faraday Soc. 58 194 A quantitative hydrogenation of a solution of the polymer in benzene was attempted using..an over-pressure of hydrogen (ca. 700 mm). 1977 Sci. Amer. Mar. 82/1 Just above the vocal folds are the two ‘false’ vocal folds, which are engaged when someone holds his breath with an over-pressure of air in the lungs. 1998 Canad. Jrnl. Earth Sci. 35 759 Vein formation was rapid and is consistent with models of hydrofracturing due to fluid overpressure. 3. Physics. The difference between the (highest) instantaneous pressure at a point subjected to a shock wave and the ambient atmospheric pressure. ΘΚΠ the world > matter > gas > air > [noun] > air-wave > large pressure wave > difference in pressure caused by overpressure1955 1955 Communications Pure & Appl. Math. 8 340 We evaluated the D corresponding to the shock over~pressure of 5°. 1975 Sci. Amer. July 15/3 Overpressure is proportional to the energy released by a nuclear charge and is inversely proportional to the cube of the distance from the point of explosion. 1991 Offshore Engineer Sept. 126/1 The system..had to be capable of surviving blast overpressures in excess of 1.0bar. Compounds overpressure valve n. a valve which opens to release gas when the pressure exceeds a preset amount; a safety valve. ΚΠ 1875 U.S. Patent No. 166895 17 Aug. J is a safety or over-pressure valve. 1983 Skin Diver (Nexis) 32 64 The Pro Line BC Jacket has self-adjusting side panels,..overpressure valve with dump, D-rings, quick release buckle on waist and chest, and expandable pockets. 2002 Consumer Rep. (Nexis) 67 44 Overpressure valves used with buoyancy control system could stick in open position and cause diver to drown. This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022). < n.1644
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