perimetern.

(in sense 1)Brit.

/pᵻˈrɪmᵻtə/, U.S.

/pəˈrɪmᵻdər/ (in sense 2)Brit.

/ˈpɛrᵻˌmiːtə/, U.S.

/ˈpɛrəˌmidər/

Forms: late Middle English perimentre (transmission error), late Middle English perimetre, 1500s perineter (transmission error), 1500s– perimeter, 1600s perimiter.

Origin: A borrowing from Latin. Etymon: Latin perimetros.

Etymology: < classical Latin perimetros circumference < ancient Greek περίμετρος , use as noun (short for περίμετρος γραμμή ) of περίμετρος , adjective < περι- peri- prefix + μέτρον measure (see metre n.¹). Compare ancient Greek περίμετρον, post-classical Latin perimetrum (15th cent, 1686 in British sources, first attested in a glossary). Compare French périmètre (1538 in Middle French as perimetre), Spanish perímetro (1582 or earlier), Italian perimetro (1581).For possible confusion between this word and parameter n. see discussion at that entry.

a. A continuous line forming the boundary of a closed geometrical figure or of any area or surface; a circumference; a periphery, outline. Also: the length of this.

ΘΚΠ

the world > space > relative position > condition of being external > edge, border, or margin > boundary > [noun] > enclosing boundary > boundary line enclosing a surface

perimeter?a1425

outer line1530

perimetry?a1560

periphery?a1560

circumscription1578

periphere1611

peripheria1650

outline1828

?a1425 tr. Guy de Chauliac Grande Chirurgie (N.Y. Acad. Med.) f. 10^v (MED) Of al figurez hauyng one euene mesure about perimetre [c1450 Sloane perimentre; L. perimetrum], rounde figure is most grete & of most capacite.

1590 T. Hood tr. P. de La Ramée Elem. Geom. iv. f. 2^v A radius is the right line drawen from the centre to the perimeter.

1592 R. Dallington tr. F. Colonna Hypnerotomachia f. 22^v The Stilliced or Perimeter, or vtter part of the vppermost Coronice.

1620 T. Granger Syntagma Logicum 173 A perimeter, which is the circuite, or compasse of a figure.

1706 Phillips's New World of Words (new ed.) at Crown In Geometry, Crown signifies a plain Ring included between two Concentric Perimeters.

1776 Kentish Trav. Compan. 327 In less than three months, the whole perimeter..or inclusion of the harbour, was finished.

1840 D. Lardner Treat. Geom. 100 The perimeter of the polygon will continually approach to coincidence with the circumference of the circle in which it is inscribed.

1884 E. A. Abbott Flatland i. viii. 33 They also had no sides, being blessed with a perimeter of one line or, in other words, a Circumference.

1952 T. Armstrong Adam Brunskill vii. 221 On the perimeter, the overshot waterwheel's buckets were replaced by paddles.

1991 Offshore Engineer Sept. 102/1 The risers are held around the perimeter of a 27m diameter circle in the ends of radial spider arms formed in flexible composite material.

b. figurative and in extended use. A ring or space surrounding something; an edge, limit of extent, verge (sometimes associated or confused with parameter n. 8).

ΘΚΠ

the world > space > relative position > condition of being external > surrounding > [noun] > that which surrounds > a surrounding space or area

perimetera1637

periphery1759

out-quarter1888

a1637 B. Jonson Magnetick Lady Induct. 110 in Wks. (1640) III Hee makes that his Center attractive, to draw thither a diversity of Guests, all persons of different humours to make up his Perimiter.

1641 J. Milton Reason Church-govt. 54 In respect of a woodden table & the perimeter of holy ground about it..the Priest esteems their lay-ships unhallow'd and unclean.

1884 E. A. Abbott Flatland i. x. 40 It was desirable that they should take one last view of the perimeter of the whole subject, its defects as well as its advantages.

1957 J. Bishop Day Christ Died (1959) 141 He strode back to his apostles, who huddled in fear on the perimeter of the crowd.

1973 M. Sarton Jrnl. 50 What upset me most was the selfishness; the perimeter was so personal and limited.

1996 J. C. Oates We were Mulvaneys 449 Patrick smiled at me, yet with his old Pinch hauteur, a just perceptible curl of the upper lip just so you'd know what the perimeters of his new tolerance were.

c. Military. A defended boundary of a military position. Also: the boundary of a prison, airfield, civil airport, etc.

ΘΚΠ

society > armed hostility > defence > [noun] > defensive boundary or cordon

defensive line1632

cordon1759

picket line1847

perimeter1861

society > travel > air or space travel > airfield or airport > [noun] > boundary of airfield or airport

perimeter1861

1762 Mil. Dict. in Gen. Hist. Sieges & Battles VI. 123 Polygon, in fortification, is the figure, or perimeter, of a fortified place.]

1861 Times 7 Nov. 7/5 93 of them [sc. martello towers] have been ordered to be erected around Vienna, in a vast perimeter, to defend the capital.

1879 Times 17 Apr. 6/1 Colonel Pearson has still a garrison of over 1,100 men, chiefly Europeans, to defend an excellent field work, the perimeter of which does not exceed 450 yards.

1923 Glasgow Herald 22 Dec. 7 At such stations special measures are taken, such as the provision of wired perimeters electrically lit and held by military and constabulary.

1967 M. Braly On the Yard xiii. 198 The Karp punched the general alarm and got on the bitch box to all the towers on the perimeter.

1993 V. E. Mitchell Windows on Lost World xx. 237 The guards positioned themselves around the perimeter.

d. Basketball. The semicircular line on a basketball court that extends from the baseline to enclose the basket and key; the three-point line. Also: the area beyond this line, extending to the sidelines and the mid-court line, from which a field goal earns three points rather than two. Frequently attributive.

ΚΠ

1959 Appeal-Democrat (Marysville, Calif.) 18 Mar. 16/4 Guard Denny Fitzpatrick, termed by Newell the ‘finest perimeter shooter I've ever coached’, averages 13.4 points per game.

1979 N.Y. Times 9 Dec. v. 2/4 The basketball moved around the perimeter methodically.

2000 R. Lazenby Mad Game vi. 227 There was no real backup on the roster who could give the team solid perimeter defense on the nights Kobe struggled.

2. Ophthalmology. An instrument for measuring the extent and characteristics of a person's field of vision.

ΘΚΠ

the world > health and disease > healing > ophthalmology or optometry > [noun] > instrumental examination or measurement of eye > instruments used in

optometer1738

opsiometer1842

ophthalmoscope1856

auto-ophthalmoscope1863

ophthalmometer1864

phacoidoscope1864

strabismometer1869

autoscope1873

strabometer1874

perimeter1875

leucoscope1883

retinoscope1883

phacoscope1886

phorometer1888

campimeter1889

prisoptometer1890

scotometer1890

skiascope1892

transilluminator1906

slit lamp1922

anomaloscope1923

gonioscope1925

synoptophore1934

1875 H. Walton Pract. Treat. Dis. Eye (ed. 3) 1070 The perimeter brought out by C. C. Jeaffreson, seems to be the best.

1899 T. C. Allbutt et al. Syst. Med. VI. 846 Their precise determination and localisation require the assistance of the perimeter.

1965 J. McPhee Sense of where you Are ii. 62 Bradley rested his chin in the middle of a device called a perimeter, and Dr. Abrams began asking when he could see a small white dot as it was slowly brought around from behind him.

2000 Ophthalmol. Times (Nexis) 15 Aug. 50 (advt.) Oculus Inc. presents the Twinfield full-field projection perimeter for routine screenings or full-threshold exams for research purposes.

Compounds

C1.

perimeter fence n.

ΚΠ

1946 Times 4 Nov. 4/3 The perimeter fence was breached and some illegal immigrants got through the gap.

1993 R. Lowe & W. Shaw Travellers 2 The site is at the end of the runway at the US airbase, between the perimeter fence and the Scots pine trees of Rendlesham Forest.

perimeter road n.

ΚΠ

1942 Times 11 July 2/3 The paramount cause of the accident was the lorry driver making wrong use of a short cut instead of using the perimeter road.

1998 Y.-M. Ooi Flame Tree (1999) ii. 20 Now, more than a century after the land was replanted, huge rain trees arch over the perimeter road to touch the water's edge.

C2.

perimeter examination n. Ophthalmology an examination of the extent and characteristics of a person's field of vision; cf. sense 2.

ΚΠ

1889 G. A. Berry Dis. Eye 553 The result of a perimeter examination..recorded on a chart.

1993 Biol. Therapy (Nexis) Oct. 117–21 This has been verified by Amsler tests and Goldmann perimeter examinations.

perimeter track n. a track around an airfield; = peritrack n.

ΘΚΠ

society > travel > air or space travel > airfield or airport > [noun] > boundary of airfield or airport > track round

perimeter track1942

1942 Times 8 June 4/4 On Saturday evening Hurricane bombers, which were protected by Spitfires, attacked the aerodrome at Maupertus..scoring hits on aerodrome buildings and on the perimeter track.

1993 Cycling Weekly 23 Jan. 9/2 Gary Wood..led after the first full lap of a fast circuit, on well-drained land with a tailwind stretch of airfield perimeter track.

Derivatives

peˈrimeter-less adj. rare boundless, infinite; (in later use in Sport), having inadequate or no defensive perimeters.

ΘΚΠ

the world > space > extension in space > measurable spatial extent > largeness > [adjective] > boundless or infinite

endless1413

bourneless1755

summitless1822

perimeter-less1849

borderless1872

1849 Tait's Edinb. Mag. 16 380 Illimitable, perimeterless, immutable space.

1989 Newsday (Nexis) 5 Mar. 11 Villanova taught the perimeter-less Redmen a lesson in sagging defenses.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	perimeter
释义	perimetern. (in sense 1)Brit. /pᵻˈrɪmᵻtə/, U.S. /pəˈrɪmᵻdər/ (in sense 2)Brit. /ˈpɛrᵻˌmiːtə/, U.S. /ˈpɛrəˌmidər/ Forms: late Middle English perimentre (transmission error), late Middle English perimetre, 1500s perineter (transmission error), 1500s– perimeter, 1600s perimiter. Origin: A borrowing from Latin. Etymon: Latin perimetros. Etymology: < classical Latin perimetros circumference < ancient Greek περίμετρος , use as noun (short for περίμετρος γραμμή ) of περίμετρος , adjective < περι- peri- prefix + μέτρον measure (see metre n.¹). Compare ancient Greek περίμετρον, post-classical Latin perimetrum (15th cent, 1686 in British sources, first attested in a glossary). Compare French périmètre (1538 in Middle French as perimetre), Spanish perímetro (1582 or earlier), Italian perimetro (1581).For possible confusion between this word and parameter n. see discussion at that entry. 1. a. A continuous line forming the boundary of a closed geometrical figure or of any area or surface; a circumference; a periphery, outline. Also: the length of this. ΘΚΠ the world > space > relative position > condition of being external > edge, border, or margin > boundary > [noun] > enclosing boundary > boundary line enclosing a surface perimeter?a1425 outer line1530 perimetry?a1560 periphery?a1560 circumscription1578 periphere1611 peripheria1650 outline1828 ?a1425 tr. Guy de Chauliac Grande Chirurgie (N.Y. Acad. Med.) f. 10^v (MED) Of al figurez hauyng one euene mesure about perimetre [c1450 Sloane perimentre; L. perimetrum], rounde figure is most grete & of most capacite. 1590 T. Hood tr. P. de La Ramée Elem. Geom. iv. f. 2^v A radius is the right line drawen from the centre to the perimeter. 1592 R. Dallington tr. F. Colonna Hypnerotomachia f. 22^v The Stilliced or Perimeter, or vtter part of the vppermost Coronice. 1620 T. Granger Syntagma Logicum 173 A perimeter, which is the circuite, or compasse of a figure. 1706 Phillips's New World of Words (new ed.) at Crown In Geometry, Crown signifies a plain Ring included between two Concentric Perimeters. 1776 Kentish Trav. Compan. 327 In less than three months, the whole perimeter..or inclusion of the harbour, was finished. 1840 D. Lardner Treat. Geom. 100 The perimeter of the polygon will continually approach to coincidence with the circumference of the circle in which it is inscribed. 1884 E. A. Abbott Flatland i. viii. 33 They also had no sides, being blessed with a perimeter of one line or, in other words, a Circumference. 1952 T. Armstrong Adam Brunskill vii. 221 On the perimeter, the overshot waterwheel's buckets were replaced by paddles. 1991 Offshore Engineer Sept. 102/1 The risers are held around the perimeter of a 27m diameter circle in the ends of radial spider arms formed in flexible composite material. b. figurative and in extended use. A ring or space surrounding something; an edge, limit of extent, verge (sometimes associated or confused with parameter n. 8). ΘΚΠ the world > space > relative position > condition of being external > surrounding > [noun] > that which surrounds > a surrounding space or area perimetera1637 periphery1759 out-quarter1888 a1637 B. Jonson Magnetick Lady Induct. 110 in Wks. (1640) III Hee makes that his Center attractive, to draw thither a diversity of Guests, all persons of different humours to make up his Perimiter. 1641 J. Milton Reason Church-govt. 54 In respect of a woodden table & the perimeter of holy ground about it..the Priest esteems their lay-ships unhallow'd and unclean. 1884 E. A. Abbott Flatland i. x. 40 It was desirable that they should take one last view of the perimeter of the whole subject, its defects as well as its advantages. 1957 J. Bishop Day Christ Died (1959) 141 He strode back to his apostles, who huddled in fear on the perimeter of the crowd. 1973 M. Sarton Jrnl. 50 What upset me most was the selfishness; the perimeter was so personal and limited. 1996 J. C. Oates We were Mulvaneys 449 Patrick smiled at me, yet with his old Pinch hauteur, a just perceptible curl of the upper lip just so you'd know what the perimeters of his new tolerance were. c. Military. A defended boundary of a military position. Also: the boundary of a prison, airfield, civil airport, etc. ΘΚΠ society > armed hostility > defence > [noun] > defensive boundary or cordon defensive line1632 cordon1759 picket line1847 perimeter1861 society > travel > air or space travel > airfield or airport > [noun] > boundary of airfield or airport perimeter1861 1762 Mil. Dict. in Gen. Hist. Sieges & Battles VI. 123 Polygon, in fortification, is the figure, or perimeter, of a fortified place.] 1861 Times 7 Nov. 7/5 93 of them [sc. martello towers] have been ordered to be erected around Vienna, in a vast perimeter, to defend the capital. 1879 Times 17 Apr. 6/1 Colonel Pearson has still a garrison of over 1,100 men, chiefly Europeans, to defend an excellent field work, the perimeter of which does not exceed 450 yards. 1923 Glasgow Herald 22 Dec. 7 At such stations special measures are taken, such as the provision of wired perimeters electrically lit and held by military and constabulary. 1967 M. Braly On the Yard xiii. 198 The Karp punched the general alarm and got on the bitch box to all the towers on the perimeter. 1993 V. E. Mitchell Windows on Lost World xx. 237 The guards positioned themselves around the perimeter. d. Basketball. The semicircular line on a basketball court that extends from the baseline to enclose the basket and key; the three-point line. Also: the area beyond this line, extending to the sidelines and the mid-court line, from which a field goal earns three points rather than two. Frequently attributive. ΚΠ 1959 Appeal-Democrat (Marysville, Calif.) 18 Mar. 16/4 Guard Denny Fitzpatrick, termed by Newell the ‘finest perimeter shooter I've ever coached’, averages 13.4 points per game. 1979 N.Y. Times 9 Dec. v. 2/4 The basketball moved around the perimeter methodically. 2000 R. Lazenby Mad Game vi. 227 There was no real backup on the roster who could give the team solid perimeter defense on the nights Kobe struggled. 2. Ophthalmology. An instrument for measuring the extent and characteristics of a person's field of vision. ΘΚΠ the world > health and disease > healing > ophthalmology or optometry > [noun] > instrumental examination or measurement of eye > instruments used in optometer1738 opsiometer1842 ophthalmoscope1856 auto-ophthalmoscope1863 ophthalmometer1864 phacoidoscope1864 strabismometer1869 autoscope1873 strabometer1874 perimeter1875 leucoscope1883 retinoscope1883 phacoscope1886 phorometer1888 campimeter1889 prisoptometer1890 scotometer1890 skiascope1892 transilluminator1906 slit lamp1922 anomaloscope1923 gonioscope1925 synoptophore1934 1875 H. Walton Pract. Treat. Dis. Eye (ed. 3) 1070 The perimeter brought out by C. C. Jeaffreson, seems to be the best. 1899 T. C. Allbutt et al. Syst. Med. VI. 846 Their precise determination and localisation require the assistance of the perimeter. 1965 J. McPhee Sense of where you Are ii. 62 Bradley rested his chin in the middle of a device called a perimeter, and Dr. Abrams began asking when he could see a small white dot as it was slowly brought around from behind him. 2000 Ophthalmol. Times (Nexis) 15 Aug. 50 (advt.) Oculus Inc. presents the Twinfield full-field projection perimeter for routine screenings or full-threshold exams for research purposes. Compounds C1. perimeter fence n. ΚΠ 1946 Times 4 Nov. 4/3 The perimeter fence was breached and some illegal immigrants got through the gap. 1993 R. Lowe & W. Shaw Travellers 2 The site is at the end of the runway at the US airbase, between the perimeter fence and the Scots pine trees of Rendlesham Forest. perimeter road n. ΚΠ 1942 Times 11 July 2/3 The paramount cause of the accident was the lorry driver making wrong use of a short cut instead of using the perimeter road. 1998 Y.-M. Ooi Flame Tree (1999) ii. 20 Now, more than a century after the land was replanted, huge rain trees arch over the perimeter road to touch the water's edge. C2. perimeter examination n. Ophthalmology an examination of the extent and characteristics of a person's field of vision; cf. sense 2. ΚΠ 1889 G. A. Berry Dis. Eye 553 The result of a perimeter examination..recorded on a chart. 1993 Biol. Therapy (Nexis) Oct. 117–21 This has been verified by Amsler tests and Goldmann perimeter examinations. perimeter track n. a track around an airfield; = peritrack n. ΘΚΠ society > travel > air or space travel > airfield or airport > [noun] > boundary of airfield or airport > track round perimeter track1942 1942 Times 8 June 4/4 On Saturday evening Hurricane bombers, which were protected by Spitfires, attacked the aerodrome at Maupertus..scoring hits on aerodrome buildings and on the perimeter track. 1993 Cycling Weekly 23 Jan. 9/2 Gary Wood..led after the first full lap of a fast circuit, on well-drained land with a tailwind stretch of airfield perimeter track. Derivatives peˈrimeter-less adj. rare boundless, infinite; (in later use in Sport), having inadequate or no defensive perimeters. ΘΚΠ the world > space > extension in space > measurable spatial extent > largeness > [adjective] > boundless or infinite endless1413 bourneless1755 summitless1822 perimeter-less1849 borderless1872 1849 Tait's Edinb. Mag. 16 380 Illimitable, perimeterless, immutable space. 1989 Newsday (Nexis) 5 Mar. 11 Villanova taught the perimeter-less Redmen a lesson in sagging defenses. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.?a1425
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