tractionn.

/ˈtrakʃən/

Etymology: < medieval Latin tractiōnem (Albertus, a1250), noun of action < trahĕre, tractum to draw. So French traction, Spanish traccion, Portuguese tracção, Italian trazione.

a. The action of drawing or pulling; draught: opposed to pulsion or pushing, and (in Dynamics) to pressure. force of traction, the force exerted in or required for traction. line of traction, the line along which this force acts. angle of traction, the angle between the line of traction and the surface along which the body is drawn.

ΚΠ

1656 tr. T. Hobbes Elements Philos. iii. xxii. 254 Motion is distinguished into Pulsion and Traction.

1837 W. Whewell Hist. Inductive Sci. II. 40 Bodies, on which pressure and traction are exerted.

1843 Penny Cycl. XXV. 109/2 When the angle of traction..is 15 or 16 degrees, a horse pulls with good effect... An example of the force of traction exerted by steam.

1868 P. M. Duncan tr. L. Figuier Insect World Introd. 25 The cockchafer..possesses a power of traction equal to more than 14 times its own weight.

b. Physiology and Pathology. A drawing or pulling of a part or organ (in an animal or plant) by some vital process, as the contraction of a muscle, or the tension of some adherent part.

ΘΚΠ

the world > movement > impelling or driving > pushing and pulling > [noun] > pulling

drawingc1300

draughta1398

pullinga1425

draggingc1440

halingc1440

lugging?a1500

attraction1578

toilingc1600

trainage1611

hale1615

traction1615

hauling1626

trail1674

tracting1780

haulage1826

pull1833

drawal1936

1615 H. Crooke Μικροκοσμογραϕια 544 In the traction of the first the lid is depressed; in the traction of the latter it is lifted vp.

1669 W. Holder Elem. Speech 163 The Malleus, being fixed to an extensible Membrane, follows the Traction of the Muscle.

1802 W. Paley Nat. Theol. xi. 222 The claws do their office in keeping hold of the support..by the traction of the tendons, in consequence of the attitude which the legs and thighs take by the bird sitting down.

1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 728 The layers which are less turgid and grow more slowly are exposed to a passive traction which promotes their growth.

1876 Clin. Soc. Trans. 9 192 There was..a slight..traction of face to the right side when the patient laughed.

c. A drawing or pulling movement used in massage, etc.: in quot. 1841 applied to the use of metallic tractors (see tractor n. 1).

ΘΚΠ

the world > health and disease > healing > medical treatment > types of treatment generally > [noun] > other miscellaneous treatments

majoration1626

relaxant1661

diaeresis1706

blistering1711

Perkinism1798

tranquillizing1801

tractoration1803

tractorism1827

moxibustion1833

traction1841

remediation1850

moxocausis1857

bed-rest1872

aerotherapeutics1876

aerotherapy1876

metallotherapy1877

block1882

counter-irritation1882

bacteriotherapy1886

mechanotherapy1890

mobilization1890

seismotherapy1901

bacterization1902

replacement therapy1902

biotherapy1912

occupational therapy1915

protein therapy1917

psychophysicotherapeutics1922

recovery programme1922

plombage1933

bacteriostasis1936

oestrogenization1960

hyperalimentation1962

vegetablization1963

pain management1966

palliative care1967

gene therapy1970

the world > health and disease > healing > medical treatment > anaesthetization, pain-killing, etc. > [noun] > analgesia > method using metallic tractors

Perkinism1798

tractoration1803

tractorism1827

traction1841

1841 Fraser's Mag. 25 89 The effects produced by traction, or the rubbing of metallic tractors, tipped with little lumps of wax, on the parts affected by pain, are well known.

1887 D. Maguire Art of Massage (ed. 4) iii. 51 Tractions are movements used on the articulations, by pulling one part while holding the other.

1901 Westm. Gaz. 28 Nov. 10/2 Traction of the tongue—that is, moving it about in a rhythmical manner—has produced wonderful results in restoring the apparently dead (especially children) to life. Dr. Laborde, of Paris, is the discoverer of the treatment.

d. figurative. Drawing, attraction, attracting power.

ΘΚΠ

the mind > attention and judgement > attractiveness > [noun] > attractive quality or feature > drawing

draughta1300

traction1649

1649 E. Reynolds Israels Prayer (new ed.) v. 18 Our conversion and sanctification comes from..a supernaturall and omnipotent traction.

a1711 T. Ken Christophil in Wks. (1721) I. 425 His Love in Suavities distills, Preventions, Tractions sweet, Devout Christ-hymning Heat.

1883 A. H. Welsh Eng. Lit. I. vi. 384 He [Macbeth] feels the resistless traction of fate.

e. Medicine. A sustained pull applied to a part of the body to maintain the positions of fractured bones following reduction of the fracture; the state of being subjected to such a pull; so in traction.

ΘΚΠ

the world > health and disease > healing > medical treatment > surgery > treatments uniting or replacing parts > [noun] > setting bones or dislocations > extension or traction

extension1617

counter-extending1874

counter-extension1874

traction1885

1885 Boston Med. & Surg. Jrnl. 112 545/1 The high pulleys..were used, as before, for oblique traction from the knee bands.

1939 W. C. Campbell Operative Orthopedics ii. 97 The majority of apparatus for either suspension or traction of the upper extremity is extremely cumbersome.

1962 Lancet 13 Jan. 61/1 The patient had previously been treated by neck traction and by prolonged physiotherapy, without benefit.

1973 ‘D. Shannon’ Spring of Violence (1974) iii. 46 They had one leg in traction.

1981 R. S. H. Browne Basic Facts in Orthopaedics 95 Traction is used to overcome painful muscle spasm.

a. spec. The drawing of vehicles or loads along a road or track; esp. in reference to the power by which this is done, as horse traction, steam traction, electric traction.

ΘΚΠ

society > travel > transport > transport or conveyance by drawing along > [noun]

trainage1611

overhaul1625

tow1793

trackage1820

traction1822

haulage1826

1822 T. Webster Imison's Elem. Sci. & Art (new ed.) I. 27 Dividing the beam..that the point of traction may be as much nearer to the stronger horse.

1826 J. Adamson Sketches Information Rail-roads 38 Every change..has..added to our powers of tracktion.

1902 Daily Chron. 1 July 4/6 The three stages are horse-traction, steam traction, and electric traction.

b. transferred. (a) A vehicle driven by some special power, as a motor car. nonce-use. (b) Stock Market. Stocks connected with traction, as tramways, etc.

ΘΚΠ

society > trade and finance > stocks and shares > stocks, shares, or bonds > [noun] > stock > types of

joint stock1615

fancya1652

water stock1675

Bank stock1694

India stock1702

government stock1734

inscription1800

gas stock1820

railway stock1836

common stock1852

floater1871

blue chip1874

trunks1892

traction1896

omnium1902

mummy1903

motors1908

rollover1947

blue-chipper1953

red chip1968

large-cap1982

small cap1984

society > travel > means of travel > a conveyance > vehicle > powered vehicle > motor car > [noun]

buggy1888

motor vehicle1890

motor carriage1894

autocar1895

jam jar1895

motor car1895

car1896

traction1896

motor1899

bubble1901

machine1901

Lizzie1913

buzz-wagon1914

road car1914

short1914

scooter1917

buzz-box1920

ride1930

drag1935

bus1939

wagon1955

wheels1959

sheen1968

low rider1974

scoot1977

1896 Westm. Gaz. 13 Nov. 5/2 They attended the Court, having ridden in ten miles on the offending traction.

1903 Daily Chron. 5 Nov. 8/7 The victory for Tammany early in the session reflected strength in tractions and other municipal utility stocks.

1905 Daily Chron. 4 May 5/7 Prices worked lower. Coalers and tractions showed some strength.

3. Short for force of traction at sense 1a (as a measurable quantity); the amount of rolling friction (also traction of adhesion) as measuring this (quot. 1877).

ΘΚΠ

the world > matter > physics > mechanics > force > [noun] > force of traction

traction1825

1825 ‘J. Nicholson’ Operative Mechanic 666 If the speed be increased from six miles an hour to eight, the horses have by no means 1-4th less work to do, supposing the friction a constant quantity, and the traction consequently the same.

1838 Civil Engineer & Architect's Jrnl. 1 350/1 A dynamometer, by which the traction might be measured with considerable accuracy.

1877 E. H. Knight Pract. Dict. Mech. Traction, the adhesive friction of a wheel on a rail, a rope on a pulley, etc.

4. Physical Geography. The rolling and bumping of particles along the ground by a stream or the wind.

ΘΚΠ

the world > the earth > structure of the earth > formation of features > movement of material > [noun] > by wind, water, or ice > manner

saltation1908

traction1914

1914 G. K. Gilbert in Prof. Papers U.S. Geol. Surv. No. 86. 15 This second division of current transportation is called by certain French engineers entraînement but has received no name in English. Being in need of a succinct title, I translate the French designation..by the word traction.

1954 W. D. Thornbury Princ. Geomorphol. iii. 48 Traction involves the partial support of the material being transported by the buoyancy of the water or air but consists chiefly of the rolling, pushing, and dragging along of rock particles which are too large to be lifted.

1968 R. W. Fairbridge Encycl. Geomorphol. 319/2 Wind carries rock and organic debris by traction, saltation and suspension.

1970 R. J. Small Study of Landforms ii. 40 In areas where..chemical weathering is very active, streams may contain much of their load in solution, and traction, saltation and suspension may be correspondingly small.

Compounds

C1. General attributive.

traction company n.

traction installation n.

traction instrument n.

ΚΠ

1879 St. George's Hosp. Rep. 9 501 On three eyes a traction instrument was used.

traction movement n.

ΚΠ

1887 D. Maguire Art of Massage (ed. 4) iv. 106 Executing..some traction movements.

traction power n.

ΘΚΠ

the world > matter > physics > energy or power of doing work > [noun] > capacity for exertion of mechanical force > power or rate of work known as horse-power

horsepower1860

traction power1908

poke1965

1908 Westm. Gaz. 13 Feb. 5/2 American machines..are geared so low as to give them a maximum of traction power at the expense of speed.

C2.

traction aneurism n. (see quots.).

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of internal organs > vascular disorders > [noun] > dilation > aneurism

aneurysm?a1425

traction aneurism1891

1891 Cent. Dict. Traction-aneurism.

1899 New Sydenham Soc. Lexicon T[raction] aneurism, an aneurism most commonly seen in children, due to traction of the aorta from an incompletely atrophied ductus Botalli.

traction diverticulum n. = traction aneurism n.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of internal organs > disorders of throat > [noun] > other throat disorders

roup1579

noma1676

yark1806

sprue1880

smoker's throat1888

traction diverticulum1897

1897 T. C. Allbutt et al. Syst. Med. III. 364 Traction deverticula generally occur on the anterior wall of the œsophagus.

1899 New Sydenham Soc. Lexicon T[raction] diverticulum, a circumscribed sacculation of the œsophagus from the traction of the circum-œsophageal adhesions.

traction-gearing n. an inexact name for friction-gearing n. at friction n. Compounds 2.

ΘΚΠ

society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > friction

friction-gear1874

traction-gearing1877

1877 E. H. Knight Pract. Dict. Mech. Traction-gearing, an arrangement for turning a wheel and its shaft by means of friction or adhesion.

Categories »

traction-load n. the weight of a locomotive engine or motor car which presses the driving-wheels upon the rail or ground so as to produce the requisite adhesive friction and prevent the wheel from slipping.

traction motor n. an electric motor designed for use in traction.

ΘΚΠ

society > occupation and work > equipment > machine > machines which impart power > motor > [noun] > electric

electromotor1879

electric locomotive1880

shunt motor1883

shunt machine1888

repulsion motor1891

rotary converter1891

induction motor1897

traction motor1900

selsyn1926

torque motor1926

synchro1943

magslip1947

1900 H. F. Parshall & H. M. Hobart Electr. Generators i. 232 For satisfactory commutation, traction motors are designed with very high magnetisation at full load.

1950 Times Rev. Industry Sept. 25/1 The other two [locomotives] will have single-phase a.c. traction motors of special design.

1969 R. W. Smeaton Motor Applic. & Maintenance Handbk. viii. 5 Traction motors are very ruggedly built.

traction splint n. Surgery a splint with an attachment for pulling upon the limb.

ΘΚΠ

the world > health and disease > healing > medical appliances or equipment > surgical supports > [noun] > appliances for stretching limbs to be set

strap1706

stirrup1884

traction splint1935

1935 Sun (Baltimore) 5 Apr. 3/2 The remedy..is use of ‘traction splints’, devices for automatically pulling ends of broken bones together and holding them.

1976 M. Machlin Pipeline xl. 443 He's got a bad break there. You'd better put that leg in a traction splint.

traction-wheel n. a driving-wheel.

ΘΚΠ

society > travel > means of travel > a conveyance > vehicle > powered vehicle > [noun] > parts of

traction-wheel1877

steering wheel1907

1877 E. H. Knight Pract. Dict. Mech. Traction-wheel, a wheel employed in drawing or impelling a vehicle, as the driving-wheel of a locomotive or traction-engine.

Derivatives

ˈtractional adj. of or pertaining to traction.

ΘΚΠ

the world > movement > impelling or driving > pushing and pulling > [adjective] > relating to or used in pulling

tractive1615

pully-hauly1820

tractional1877

1877 E. H. Knight Pract. Dict. Mech. at Traction The tractional surface of a driving-wheel is the face of its perimeter.

This entry has not yet been fully updated (first published 1913; most recently modified version published online December 2021).

单词	traction
释义	tractionn. /ˈtrakʃən/ Etymology: < medieval Latin tractiōnem (Albertus, a1250), noun of action < trahĕre, tractum to draw. So French traction, Spanish traccion, Portuguese tracção, Italian trazione. 1. a. The action of drawing or pulling; draught: opposed to pulsion or pushing, and (in Dynamics) to pressure. force of traction, the force exerted in or required for traction. line of traction, the line along which this force acts. angle of traction, the angle between the line of traction and the surface along which the body is drawn. ΚΠ 1656 tr. T. Hobbes Elements Philos. iii. xxii. 254 Motion is distinguished into Pulsion and Traction. 1837 W. Whewell Hist. Inductive Sci. II. 40 Bodies, on which pressure and traction are exerted. 1843 Penny Cycl. XXV. 109/2 When the angle of traction..is 15 or 16 degrees, a horse pulls with good effect... An example of the force of traction exerted by steam. 1868 P. M. Duncan tr. L. Figuier Insect World Introd. 25 The cockchafer..possesses a power of traction equal to more than 14 times its own weight. b. Physiology and Pathology. A drawing or pulling of a part or organ (in an animal or plant) by some vital process, as the contraction of a muscle, or the tension of some adherent part. ΘΚΠ the world > movement > impelling or driving > pushing and pulling > [noun] > pulling drawingc1300 draughta1398 pullinga1425 draggingc1440 halingc1440 lugging?a1500 attraction1578 toilingc1600 trainage1611 hale1615 traction1615 hauling1626 trail1674 tracting1780 haulage1826 pull1833 drawal1936 1615 H. Crooke Μικροκοσμογραϕια 544 In the traction of the first the lid is depressed; in the traction of the latter it is lifted vp. 1669 W. Holder Elem. Speech 163 The Malleus, being fixed to an extensible Membrane, follows the Traction of the Muscle. 1802 W. Paley Nat. Theol. xi. 222 The claws do their office in keeping hold of the support..by the traction of the tendons, in consequence of the attitude which the legs and thighs take by the bird sitting down. 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 728 The layers which are less turgid and grow more slowly are exposed to a passive traction which promotes their growth. 1876 Clin. Soc. Trans. 9 192 There was..a slight..traction of face to the right side when the patient laughed. c. A drawing or pulling movement used in massage, etc.: in quot. 1841 applied to the use of metallic tractors (see tractor n. 1). ΘΚΠ the world > health and disease > healing > medical treatment > types of treatment generally > [noun] > other miscellaneous treatments majoration1626 relaxant1661 diaeresis1706 blistering1711 Perkinism1798 tranquillizing1801 tractoration1803 tractorism1827 moxibustion1833 traction1841 remediation1850 moxocausis1857 bed-rest1872 aerotherapeutics1876 aerotherapy1876 metallotherapy1877 block1882 counter-irritation1882 bacteriotherapy1886 mechanotherapy1890 mobilization1890 seismotherapy1901 bacterization1902 replacement therapy1902 biotherapy1912 occupational therapy1915 protein therapy1917 psychophysicotherapeutics1922 recovery programme1922 plombage1933 bacteriostasis1936 oestrogenization1960 hyperalimentation1962 vegetablization1963 pain management1966 palliative care1967 gene therapy1970 the world > health and disease > healing > medical treatment > anaesthetization, pain-killing, etc. > [noun] > analgesia > method using metallic tractors Perkinism1798 tractoration1803 tractorism1827 traction1841 1841 Fraser's Mag. 25 89 The effects produced by traction, or the rubbing of metallic tractors, tipped with little lumps of wax, on the parts affected by pain, are well known. 1887 D. Maguire Art of Massage (ed. 4) iii. 51 Tractions are movements used on the articulations, by pulling one part while holding the other. 1901 Westm. Gaz. 28 Nov. 10/2 Traction of the tongue—that is, moving it about in a rhythmical manner—has produced wonderful results in restoring the apparently dead (especially children) to life. Dr. Laborde, of Paris, is the discoverer of the treatment. d. figurative. Drawing, attraction, attracting power. ΘΚΠ the mind > attention and judgement > attractiveness > [noun] > attractive quality or feature > drawing draughta1300 traction1649 1649 E. Reynolds Israels Prayer (new ed.) v. 18 Our conversion and sanctification comes from..a supernaturall and omnipotent traction. a1711 T. Ken Christophil in Wks. (1721) I. 425 His Love in Suavities distills, Preventions, Tractions sweet, Devout Christ-hymning Heat. 1883 A. H. Welsh Eng. Lit. I. vi. 384 He [Macbeth] feels the resistless traction of fate. e. Medicine. A sustained pull applied to a part of the body to maintain the positions of fractured bones following reduction of the fracture; the state of being subjected to such a pull; so in traction. ΘΚΠ the world > health and disease > healing > medical treatment > surgery > treatments uniting or replacing parts > [noun] > setting bones or dislocations > extension or traction extension1617 counter-extending1874 counter-extension1874 traction1885 1885 Boston Med. & Surg. Jrnl. 112 545/1 The high pulleys..were used, as before, for oblique traction from the knee bands. 1939 W. C. Campbell Operative Orthopedics ii. 97 The majority of apparatus for either suspension or traction of the upper extremity is extremely cumbersome. 1962 Lancet 13 Jan. 61/1 The patient had previously been treated by neck traction and by prolonged physiotherapy, without benefit. 1973 ‘D. Shannon’ Spring of Violence (1974) iii. 46 They had one leg in traction. 1981 R. S. H. Browne Basic Facts in Orthopaedics 95 Traction is used to overcome painful muscle spasm. 2. a. spec. The drawing of vehicles or loads along a road or track; esp. in reference to the power by which this is done, as horse traction, steam traction, electric traction. ΘΚΠ society > travel > transport > transport or conveyance by drawing along > [noun] trainage1611 overhaul1625 tow1793 trackage1820 traction1822 haulage1826 1822 T. Webster Imison's Elem. Sci. & Art (new ed.) I. 27 Dividing the beam..that the point of traction may be as much nearer to the stronger horse. 1826 J. Adamson Sketches Information Rail-roads 38 Every change..has..added to our powers of tracktion. 1902 Daily Chron. 1 July 4/6 The three stages are horse-traction, steam traction, and electric traction. b. transferred. (a) A vehicle driven by some special power, as a motor car. nonce-use. (b) Stock Market. Stocks connected with traction, as tramways, etc. ΘΚΠ society > trade and finance > stocks and shares > stocks, shares, or bonds > [noun] > stock > types of joint stock1615 fancya1652 water stock1675 Bank stock1694 India stock1702 government stock1734 inscription1800 gas stock1820 railway stock1836 common stock1852 floater1871 blue chip1874 trunks1892 traction1896 omnium1902 mummy1903 motors1908 rollover1947 blue-chipper1953 red chip1968 large-cap1982 small cap1984 society > travel > means of travel > a conveyance > vehicle > powered vehicle > motor car > [noun] buggy1888 motor vehicle1890 motor carriage1894 autocar1895 jam jar1895 motor car1895 car1896 traction1896 motor1899 bubble1901 machine1901 Lizzie1913 buzz-wagon1914 road car1914 short1914 scooter1917 buzz-box1920 ride1930 drag1935 bus1939 wagon1955 wheels1959 sheen1968 low rider1974 scoot1977 1896 Westm. Gaz. 13 Nov. 5/2 They attended the Court, having ridden in ten miles on the offending traction. 1903 Daily Chron. 5 Nov. 8/7 The victory for Tammany early in the session reflected strength in tractions and other municipal utility stocks. 1905 Daily Chron. 4 May 5/7 Prices worked lower. Coalers and tractions showed some strength. 3. Short for force of traction at sense 1a (as a measurable quantity); the amount of rolling friction (also traction of adhesion) as measuring this (quot. 1877). ΘΚΠ the world > matter > physics > mechanics > force > [noun] > force of traction traction1825 1825 ‘J. Nicholson’ Operative Mechanic 666 If the speed be increased from six miles an hour to eight, the horses have by no means 1-4th less work to do, supposing the friction a constant quantity, and the traction consequently the same. 1838 Civil Engineer & Architect's Jrnl. 1 350/1 A dynamometer, by which the traction might be measured with considerable accuracy. 1877 E. H. Knight Pract. Dict. Mech. Traction, the adhesive friction of a wheel on a rail, a rope on a pulley, etc. 4. Physical Geography. The rolling and bumping of particles along the ground by a stream or the wind. ΘΚΠ the world > the earth > structure of the earth > formation of features > movement of material > [noun] > by wind, water, or ice > manner saltation1908 traction1914 1914 G. K. Gilbert in Prof. Papers U.S. Geol. Surv. No. 86. 15 This second division of current transportation is called by certain French engineers entraînement but has received no name in English. Being in need of a succinct title, I translate the French designation..by the word traction. 1954 W. D. Thornbury Princ. Geomorphol. iii. 48 Traction involves the partial support of the material being transported by the buoyancy of the water or air but consists chiefly of the rolling, pushing, and dragging along of rock particles which are too large to be lifted. 1968 R. W. Fairbridge Encycl. Geomorphol. 319/2 Wind carries rock and organic debris by traction, saltation and suspension. 1970 R. J. Small Study of Landforms ii. 40 In areas where..chemical weathering is very active, streams may contain much of their load in solution, and traction, saltation and suspension may be correspondingly small. Compounds C1. General attributive. traction company n. traction installation n. traction instrument n. ΚΠ 1879 St. George's Hosp. Rep. 9 501 On three eyes a traction instrument was used. traction movement n. ΚΠ 1887 D. Maguire Art of Massage (ed. 4) iv. 106 Executing..some traction movements. traction power n. ΘΚΠ the world > matter > physics > energy or power of doing work > [noun] > capacity for exertion of mechanical force > power or rate of work known as horse-power horsepower1860 traction power1908 poke1965 1908 Westm. Gaz. 13 Feb. 5/2 American machines..are geared so low as to give them a maximum of traction power at the expense of speed. C2. traction aneurism n. (see quots.). ΘΚΠ the world > health and disease > ill health > a disease > disorders of internal organs > vascular disorders > [noun] > dilation > aneurism aneurysm?a1425 traction aneurism1891 1891 Cent. Dict. Traction-aneurism. 1899 New Sydenham Soc. Lexicon T[raction] aneurism, an aneurism most commonly seen in children, due to traction of the aorta from an incompletely atrophied ductus Botalli. traction diverticulum n. = traction aneurism n. ΘΚΠ the world > health and disease > ill health > a disease > disorders of internal organs > disorders of throat > [noun] > other throat disorders roup1579 noma1676 yark1806 sprue1880 smoker's throat1888 traction diverticulum1897 1897 T. C. Allbutt et al. Syst. Med. III. 364 Traction deverticula generally occur on the anterior wall of the œsophagus. 1899 New Sydenham Soc. Lexicon T[raction] diverticulum, a circumscribed sacculation of the œsophagus from the traction of the circum-œsophageal adhesions. traction-gearing n. an inexact name for friction-gearing n. at friction n. Compounds 2. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > friction friction-gear1874 traction-gearing1877 1877 E. H. Knight Pract. Dict. Mech. Traction-gearing, an arrangement for turning a wheel and its shaft by means of friction or adhesion. Categories » traction-load n. the weight of a locomotive engine or motor car which presses the driving-wheels upon the rail or ground so as to produce the requisite adhesive friction and prevent the wheel from slipping. traction motor n. an electric motor designed for use in traction. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > motor > [noun] > electric electromotor1879 electric locomotive1880 shunt motor1883 shunt machine1888 repulsion motor1891 rotary converter1891 induction motor1897 traction motor1900 selsyn1926 torque motor1926 synchro1943 magslip1947 1900 H. F. Parshall & H. M. Hobart Electr. Generators i. 232 For satisfactory commutation, traction motors are designed with very high magnetisation at full load. 1950 Times Rev. Industry Sept. 25/1 The other two [locomotives] will have single-phase a.c. traction motors of special design. 1969 R. W. Smeaton Motor Applic. & Maintenance Handbk. viii. 5 Traction motors are very ruggedly built. traction splint n. Surgery a splint with an attachment for pulling upon the limb. ΘΚΠ the world > health and disease > healing > medical appliances or equipment > surgical supports > [noun] > appliances for stretching limbs to be set strap1706 stirrup1884 traction splint1935 1935 Sun (Baltimore) 5 Apr. 3/2 The remedy..is use of ‘traction splints’, devices for automatically pulling ends of broken bones together and holding them. 1976 M. Machlin Pipeline xl. 443 He's got a bad break there. You'd better put that leg in a traction splint. traction-wheel n. a driving-wheel. ΘΚΠ society > travel > means of travel > a conveyance > vehicle > powered vehicle > [noun] > parts of traction-wheel1877 steering wheel1907 1877 E. H. Knight Pract. Dict. Mech. Traction-wheel, a wheel employed in drawing or impelling a vehicle, as the driving-wheel of a locomotive or traction-engine. Derivatives ˈtractional adj. of or pertaining to traction. ΘΚΠ the world > movement > impelling or driving > pushing and pulling > [adjective] > relating to or used in pulling tractive1615 pully-hauly1820 tractional1877 1877 E. H. Knight Pract. Dict. Mech. at Traction The tractional surface of a driving-wheel is the face of its perimeter. This entry has not yet been fully updated (first published 1913; most recently modified version published online December 2021). < n.1615
随便看	sablestoled sablesuited sabletinted sabletrap sabletrimmed sablevested sabliere sabling sably sabo sabo king sabora saboraic saboraim sabot sabota lark sabotage sabotaged sabotages sabotaging saboted saboteur sallow-looking sallow-thinking sallow-visaged