bridgeheadn.

Brit.

/ˈbrɪdʒhɛd/, U.S.

/ˈbrɪdʒˌ(h)ɛd/

Origin: Formed within English, by compounding. Etymons: bridge n.¹, head n.¹

Etymology: < bridge n.¹ + head n.¹, apparently after French tête de pont (mid 18th cent. or earlier: see tête de pont n.).Compare the following earlier passage, which shows bridge head as a noun phrase denoting the end of a bridge more generally:1610 P. Holland tr. W. Camden Brit. 577 A very proper towne situate upon an hill arising from the river: in the Suburb, as it were, whereof, was sometime Bengeworth Castle at the bridge head [L. ad caput pontis]. With this use, compare head n.¹ 26b, bridge foot at bridge n.¹ Compounds 1, post-classical Latin caput pontis end of a bridge (12th cent.), and also Middle Low German brugghehoved end of a bridge (1375 in an apparently isolated attestation).

1. Military.

a. A fortification which covers or protects the end of a bridge, esp. one facing an enemy.

ΘΚΠ

society > armed hostility > defence > defensive work(s) > [noun] > strong point or fortified position

bridgehead1760

point d'appui1787

strong point1789

high ground1869

beachhead1940

box1942

airhead1943

society > armed hostility > defence > defensive work(s) > [noun] > works at bridge

bridgehead1760

tête de pont1794

1760 J. Muller in tr. L. A. de la M. Clairac Field Engineer 37 The bridge-heads are made of various figures and sizes..with or without flanks.

1875 C. Clery Minor Tactics xv. 198 When the defenders hold a bridge head or other fortified post on the river.

1914 Observer 6/6 They stormed the heights of the Meuse..and too the little town of St. Mihiel, with its convenient groups of bridgeheads.

2009 P. Glennie & N. Thrift Shaping Day iii. 88 Using soldiers' time profitably in field fortification: digging trenches, raising embankments, building redoubts, constructing bridgeheads, and the like.

b. A strong position secured by an armed force inside enemy territory, from which to advance or attack. Also more generally: any place or region which is secured in order to advance strategic, political, or economic objectives.

ΚΠ

1904 Geogr. Jrnl. 23 436 France, Italy, Egypt, India, and Corea would become so many bridge heads where the outside navies would support armies to compel the pivot allies to deploy land forces and prevent them from concentrating their whole strength on fleets.

1939 N.Y. Times 14 May 22/2 Turkey appears to be on the best way to become a bridgehead for foreign aggressive and hegemonial designs against this region.

2003 W. Harris Levant ii. 69 The Fatimids used the reviving ports as a naval bridgehead in the region.

2. figurative. A position of strength or security established within an environment that is perceived as hostile, from which further progress may be made.

ΚΠ

1919 Sci. Monthly Apr. 352 Important as has been the installation of mechanical safeguards..and the remodeling of plant arrangement and plant equipment, the human factor—the personal equation—still holds a bridgehead in the bloody arena of accident causation.

1959 Listener 2 Apr. 583/2 Once we have secured these export bridgeheads we can of course expect greater benefits.

2001 N.Y. Rev. Bks. 1 Nov. 51/1 And Britain is, of course, a dangerous bridgehead of American neoliberalism in Europe.

3. Chemistry. Either of a pair of atoms (typically carbon) that are common to two or more rings in a molecule. Frequently attributive.

ΚΠ

1935 Jrnl. Chem. Soc. 255 Inversion in the tertiary position would necessitate a simultaneous inversion at the other bridge-head, for which there is no mechanism.

1970 Jrnl. Amer. Chem. Soc. 92 1614 The separation between the bridgehead carbon atoms is 1.845 Å, the shortest nonbonded C…C distances on record.

1981 G. Gundersen & D. W. H. Rankin in D. M. Adams & E. A. V. Ebsworth Spectrosc. Properties Inorg. & Organometallic Compounds XIV. 402 Further studies have been carried out on gas-phase structures of polycyclic organosilanes with bridgehead silicon atoms.

2006 P. M. Dewick Essent. Org. Chem. iii. 117/1 If we are going to bridge a cyclohexane ring with a one-carbon bridge, there is only one way to achieve this; in other words, the configuration at the second bridgehead is fixed by that chosen at the first.

This entry has been updated (OED Third Edition, December 2019; most recently modified version published online December 2021).

单词	bridgehead
释义	bridgeheadn. Brit. /ˈbrɪdʒhɛd/, U.S. /ˈbrɪdʒˌ(h)ɛd/ Origin: Formed within English, by compounding. Etymons: bridge n.¹, head n.¹ Etymology: < bridge n.¹ + head n.¹, apparently after French tête de pont (mid 18th cent. or earlier: see tête de pont n.).Compare the following earlier passage, which shows bridge head as a noun phrase denoting the end of a bridge more generally:1610 P. Holland tr. W. Camden Brit. 577 A very proper towne situate upon an hill arising from the river: in the Suburb, as it were, whereof, was sometime Bengeworth Castle at the bridge head [L. ad caput pontis]. With this use, compare head n.¹ 26b, bridge foot at bridge n.¹ Compounds 1, post-classical Latin caput pontis end of a bridge (12th cent.), and also Middle Low German brugghehoved end of a bridge (1375 in an apparently isolated attestation). 1. Military. a. A fortification which covers or protects the end of a bridge, esp. one facing an enemy. ΘΚΠ society > armed hostility > defence > defensive work(s) > [noun] > strong point or fortified position bridgehead1760 point d'appui1787 strong point1789 high ground1869 beachhead1940 box1942 airhead1943 society > armed hostility > defence > defensive work(s) > [noun] > works at bridge bridgehead1760 tête de pont1794 1760 J. Muller in tr. L. A. de la M. Clairac Field Engineer 37 The bridge-heads are made of various figures and sizes..with or without flanks. 1875 C. Clery Minor Tactics xv. 198 When the defenders hold a bridge head or other fortified post on the river. 1914 Observer 6/6 They stormed the heights of the Meuse..and too the little town of St. Mihiel, with its convenient groups of bridgeheads. 2009 P. Glennie & N. Thrift Shaping Day iii. 88 Using soldiers' time profitably in field fortification: digging trenches, raising embankments, building redoubts, constructing bridgeheads, and the like. b. A strong position secured by an armed force inside enemy territory, from which to advance or attack. Also more generally: any place or region which is secured in order to advance strategic, political, or economic objectives. ΚΠ 1904 Geogr. Jrnl. 23 436 France, Italy, Egypt, India, and Corea would become so many bridge heads where the outside navies would support armies to compel the pivot allies to deploy land forces and prevent them from concentrating their whole strength on fleets. 1939 N.Y. Times 14 May 22/2 Turkey appears to be on the best way to become a bridgehead for foreign aggressive and hegemonial designs against this region. 2003 W. Harris Levant ii. 69 The Fatimids used the reviving ports as a naval bridgehead in the region. 2. figurative. A position of strength or security established within an environment that is perceived as hostile, from which further progress may be made. ΚΠ 1919 Sci. Monthly Apr. 352 Important as has been the installation of mechanical safeguards..and the remodeling of plant arrangement and plant equipment, the human factor—the personal equation—still holds a bridgehead in the bloody arena of accident causation. 1959 Listener 2 Apr. 583/2 Once we have secured these export bridgeheads we can of course expect greater benefits. 2001 N.Y. Rev. Bks. 1 Nov. 51/1 And Britain is, of course, a dangerous bridgehead of American neoliberalism in Europe. 3. Chemistry. Either of a pair of atoms (typically carbon) that are common to two or more rings in a molecule. Frequently attributive. ΚΠ 1935 Jrnl. Chem. Soc. 255 Inversion in the tertiary position would necessitate a simultaneous inversion at the other bridge-head, for which there is no mechanism. 1970 Jrnl. Amer. Chem. Soc. 92 1614 The separation between the bridgehead carbon atoms is 1.845 Å, the shortest nonbonded C…C distances on record. 1981 G. Gundersen & D. W. H. Rankin in D. M. Adams & E. A. V. Ebsworth Spectrosc. Properties Inorg. & Organometallic Compounds XIV. 402 Further studies have been carried out on gas-phase structures of polycyclic organosilanes with bridgehead silicon atoms. 2006 P. M. Dewick Essent. Org. Chem. iii. 117/1 If we are going to bridge a cyclohexane ring with a one-carbon bridge, there is only one way to achieve this; in other words, the configuration at the second bridgehead is fixed by that chosen at the first. This entry has been updated (OED Third Edition, December 2019; most recently modified version published online December 2021). < n.1760
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