eccentricadj.n.

Brit.

/ᵻkˈsɛntrɪk/,

/ɛkˈsɛntrɪk/, U.S.

/ɪkˈsɛntrɪk/

Forms: 1500s eccentrike, 1500s–1900s excentric(k(e, 1600s–1700s eccentrick, 1600s ecentrique, excentrique, 1600s– eccentric.

Etymology: < late Latin eccentricus, < Greek ἔκκεντρος eccentric as opposed to concentric ( < ἐκ out of + κέντρον centre); see -ic suffix; the word is found in all the Romanic languages: French excentrique (14th cent. in Littré), Provençal excentric, Italian eccentrico, Spanish excéntrico.

A. adj.

a. Of a circle: Not concentric with another circle (const. to). Of two or more circles: Not mutually concentric. Chiefly used of circles of which one is within the other. †eccentric orb n. in the Ptolemaic astronomy, an orbit not having the earth precisely in its centre (afterwards sometimes used in a Copernican sense: an orbit not having the sun precisely in its centre).

ΘΚΠ

the world > relative properties > number > geometry > shape or figure > [adjective] > two-dimensional > circular > concentric > not

eccentric1556

eccentrical1641

1556 R. Record Castle of Knowl. 247 These two circles..are eccentrike, for that they haue not one common centre.

1621 R. Burton Anat. Melancholy ii. ii. iii. 324 Which howsoeuer Ptolemy,..maintaine, to be reall orbs, excentricke, concentricke.

1656 tr. T. Hobbes Elements Philos. iv. xxvi. 321 This annual Orbe [of the earth] is excentrique to the Sunne.

†b. figurative. Not agreeing, having little in common. Const. from, to. Obsolete.

ΘΚΠ

the world > relative properties > order > disorder > disharmony or incongruity > [adjective]

discordablea1393

discordanta1393

discordinga1398

incongruea1398

inconvenient1398

unaccording1398

discordc1415

disagreeablea1425

inconsutilec1450

unaccordanta1470

dissonant1490

disaccordanta1513

disagreeing?1526

incongruent1531

wide1531

unconsonant1535

dissonate1548

dissenting1550

dissident?c1550

unagreeable?1550

disconformc1554

discrepant1556

absonant1564

dissentany1586

disconsorted1589

disagreed1596

discordous1597

discordious1598

incorrespondent1599

dissentious1605

untunable1605

incongruous1611

unagreeing1611

unanswerable1611

eccentric1612

unconcurrent1613

disconsonant1614

dissentaneous1623

dissorting1631

uncorrespondent1631

discorrespondent1635

incoincident1636

unconcurring1639

eccentrical1640

unatonable1645

incompliant1647

pluranimous1650

disconformeda1658

inagreeable1657

inconsonant1658

disharmonious1659

inconcinn1660

discongruous1663

unharmonious1667

discoherent1675

uncongruous1709

inharmonious1749

immutual1768

unharmonized1803

unconsentaneous1818

inaccordant1822

uncorresponding1826

unharmonizing1851

non-concurring1866

discordful1867

disharmonic1887

non-concurrent1907

1612 F. Bacon Ess. (new ed.) xvi. 80 His owne endes: which must needs bee often Eccentrike to the ends of his master or state.

1666 J. Collins Let. in S. P. Rigaud & S. J. Rigaud Corr. Sci. Men 17th Cent. (1841) (modernized text) II. 463 My book of Accounts..is so eccentric to your studies as I thought it unworthy your acceptance.

1670 Sanderson in Ussher Power Princes (1683) Pref. A task..altogether excentrick from their function and calling.

2. That has its axis, its point of support, etc., otherwise than centrally placed. Cf. B. 2.

ΘΚΠ

the world > space > shape > misshapenness > [adjective] > asymmetrical or misproportioned

misproportioned1552

asymmetral1615

eccentric1647

incommensurate1650

asymmetrous1661

asymmetrical1690

lopsided1711

uncertain1742

unsymmetrical1755

one-sided1857

alop1865

asymmetric1878

1647 N. Ward Simple Cobler Aggawam 45 Else the world will be Eccentrick, and then it will whirle.

1754 S. Savery in Philos. Trans. 1753 (Royal Soc.) 48 177 Large object-glasses for telescopes are not commonly well center'd..I..return'd [two faulty ones] and had two sent me again, as eccentric well nigh as the former ones.

1825 N. Wood Pract. Treat. Railroads 148 This eccentric circle is loose upon the axle..a circular hoop.. fits the circumference of the eccentric motion.

1831 J. Holland Treat. Manuf. Metal I. 92 That ingenious but simple contrivance the eccentric wheel.

a. Not centrally placed. Of an axis, etc.: Not passing through the centre.

ΘΚΠ

the world > space > shape > misshapenness > [adjective] > asymmetrical or misproportioned > about centre

eccentric1858

excentric1866

off-centre1930

off-centred1955

1858 J. F. W. Herschel Outl. Astron. (ed. 5) iii. 83 If the axis be excentric.

1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 203 The organic centre of the transverse section does not usually coincide with the geometrical centre, as is easily seen in the transverse sections of most petioles and horizontal branches with an ‘eccentric’ pith.

1884 F. O. Bower & D. H. Scott tr. H. A. de Bary Compar. Anat. Phanerogams & Ferns 365 The position of the bundle in the root is from the first slightly eccentric.

†b. Of a locality: Remote from the centre; out of the way. [So French quartier excentrique.] Obsolete.

ΘΚΠ

the world > space > distance > distance or farness > [adjective] > remote or inaccessible

outc1425

inaccessible?a1475

out-way1532

deviate1575

unaccessible1596

reachless1597

devious1599

wandering1600

untouchable1622

outlying1651

back1683

no-nationa1756

out-of-the-way1756

outlandish1792

eccentric1800

outworld1808

out-by1816

outside1847

off-lying1859

unget-at-able1862

far-out1887

far-back1900

1800 T. Jefferson Let. 18 Jan. in Papers (2004) XXXI. 320 We have..a college (Wm. & Mary)..eccentric in it's position, exposed to bilious diseases & therefore abandoned by the public care.

c. Physiology. (See quot. 1876.)

ΚΠ

1876 J. Bernstein Five Senses 20 The sensation of sight can only take place..in the brain..and yet we transfer the object seen to the external world surrounding us. This fact is called the law of eccentric sensation.

†4. Misused for: Having no centre. Obsolete.

ΘΚΠ

the world > existence and causation > existence > substantiality or concreteness > unsubstantiality or abstractness > [adjective] > superficial

thin?c1225

superficialc1456

shallowc1595

superficiary1605

eccentric1633

outside1644

tenuious1656

swimminga1680

outwarda1682

two-dimensional1934

1633 T. Adams Comm. 2 Peter (iii. 7) 1228 Onely that is Eccentrique, which was never made.

1652 E. Benlowes Theophila ii. xli. 28 Deaths Hell Deaths Self out-deaths! Vindictive Place!..Excentrick Space!

1681 Table of Hard Words in S. Pordage tr. T. Willis Remaining Med. Wks. Eccentric, without centre.

a. Of orbital motion: Not referable to a fixed centre of revolution; not circular. Of a curve, an elliptic, parabolic, or hyperbolic orbit: Deviating (in greater or less degree) from a circular form.

ΘΚΠ

the world > the universe > heavenly body > movement of heavenly bodies > [adjective] > movement in orbit > eccentric

eccentric1642

1642 J. Howell Instr. Forreine Travell xviii. 222 Let these Lights..be kept from irregular and eccentrique motions.

1693 R. Bentley Boyle Lect. vii. 33 They could not..acquire such Revolutions..in Ellipses very little Eccentric.

1796 J. Morse Amer. Universal Geogr. (new ed.) I. 32 Like other planets moving about the sun in very eccentric ellipses.

1866 J. F. W. Herschel Familiar Lect. Sci. Subj. 104 A comet moves round the sun..in an immensely elongated, or as it is termed a very eccentric, ellipse.

b. transferred. Of a heavenly body: Moving in an orbit deviating (more or less) from a circle.

ΚΠ

1734 tr. P. L. M. de Maupertuis Diss. Cœlestial Bodies 63 in J. Keill Exam. Burnet's Theory of Earth (ed. 2) The Comets are no more..than very excentric Planets.

a1791 J. Wesley Serm. lxix. 8, in Wks. (1811) IX. 249 Those horrid, eccentric orbs.

1815 J. Smith Panorama Sci. & Art I. 581 When very eccentric planets or comets go round any flat star, in orbits much inclined to its equator.

Categories »

c. eccentric anomaly: the true anomaly of a planet moving in an eccentric orbit (opposed to the mean anomaly). eccentric equation: see equation n. 3a.

6. figurative. Regulated by no central control.

a. Of actions, movements, and things in general: Irregular, anomalous, proceeding by no known method, capricious.

ΘΚΠ

the world > relative properties > order > disorder > irregularity > [adjective]

uneven1390

irregular1483

scambling1592

prevaricant1644

eccentrica1649

vagous1660

erratical1698

scrambling1778

unregular1884

a1649 W. Drummond Poems (1656) 195 Finding all eccentrick in our times.

1792 E. Burke Consid. Present State Affairs in Wks. I. 586 The eccentrick aberration of Charles the Second.

1849 T. B. Macaulay Hist. Eng. I. 657 This eccentric clemency has perplexed some writers.

b. Of persons and personal attributes: Deviating from usual methods, odd, whimsical.

ΘΚΠ

the world > action or operation > behaviour > a standard of conduct > [adjective] > not conforming to standard behaviour

irregular1395

unformalc1449

informalc1475

disordered1561

monstrous1568

odd1577

irregulate1579

exorbitant1613

free-spirited1613

exorbitating1632

inconformable1633

extravagant1650

inconform1659

eccentric1685

unconformable1702

outrageous1778

unconventional1840

erratic1841

kinky1844

Bohemian1846

radical1869

Bohemic1874

nonconforming1899

hard case1904

jazz1917

offbeat1922

deviant1935

deviate1945

oddball1945

left field1951

way out1955

boho1958

non-conformant1960

sideways1969

the world > health and disease > mental health > mental illness > degree or type of mental illness > [adjective] > slightly mad > eccentric or cranky

fantastical1531

odd1577

eccentric1685

fanaticized1827

cranky1850

bee-bonneted1856

cornery1887

screwy1887

kinky1889

crankish1892

ratty1895

batchy1898

batsc1901

batty1903

potty1920

offbeat1922

off-centre1930

wacky1935

screwball1936

up the creek1941

oddball1945

wackadoo1958

kooky1959

wiggy1963

flaky1964

nutball1968

woo-woo1971

wacko1977

off-kilter1985

wackadoodle1993

fantastic-

the world > relative properties > order > disorder > irregularity > unconformity > abnormality > [adjective] > odd

quaintc1325

awkc1440

queer?a1513

odd1578

quaintish1594

odd-conceiteda1616

odd-ceited1652

whimsical1675

singulara1684

eccentric1685

oddish1705

rummish1709

comical1713

odd-like1718

rum1750

queerish1775

funny1793

quare1805

rummy1828

kinky1844

quirkish1848

quirky1873

odd-gates1906

funny-peculiar1916

antrin1925

off-brand1929

fanciful-

1685 in N. Thompson Coll. Loyal Poems 6 The Brightest, yet the Most Excentrick Soul.

1695 Ld. Preston tr. Boethius Of Consol. Philos. ii. 68 The Extravagance of Excentrick and irregular Desires.

1771 H. Mackenzie Man of Feeling (1803) xxxiv. 61 His motives were rather excentric.

1801 R. L. Edgeworth in M. Edgeworth Moral Tales I. Pref. p. viii ‘Forester’ is the picture of an eccentric character.

1836 H. Rogers Life J. Howe (1863) ii. 19 That great, though unequal and eccentric genius.

a. quasi-adv.

ΚΠ

1672 J. Dryden Conquest Granada i. v. i. 58 He moves excentrique, like a wandring star.

b. absol. quasi-n.

ΚΠ

1870 J. R. Lowell Among my Bks. (1873) 1st Ser. 203 Wordsworth never quite saw the distinction between the eccentric and the original.

B. n.

†1. [= eccentric circle , orb ; see A. 1] In Ptolemaic astronomy: A circle or orbit not having the earth precisely in its centre. Obsolete exc. Historical.

ΘΚΠ

the world > the universe > heavenly body > movement of heavenly bodies > [noun] > movement in orbit > orbit > eccentric

eccentric1561

1398 J. Trevisa tr. Bartholomew de Glanville De Proprietatibus Rerum (1495) viii. xi. 317 The fyrste meuynge of a planete..is a cercle that hyghte Ecentricus.]

1561 R. Eden tr. M. Cortés Arte Nauigation i. xx. sig. C.vi Eccentricke, is a circle which hath his center distant..from the center of the worlde.

1646 Sir T. Browne Pseudodoxia Epidemica 293 The Perigeum or lowest part of the eccentric .

1725 I. Watts Logick ii. iii. 355 Excentricks and Epicycles of Ptolomy.

1783 W. F. Martyn Geogr. Mag. 1 Introd. 14 A number of circles called eccentrics and epicycles.

figurative.1657 H. Hammond Some Profitable Direct. Priest & People 48 Reserving..somewhat for common calamities, somewhat as 'twere for the universal motion of the whole body, somewhat for excentricks.

2. Mechanics. A circular disc fixed on a revolving shaft, some distance out of centre, working freely in a ring (the eccentric strap), which is attached to a rod called an eccentric rod, by means of which the rotating motion of the shaft is converted into a backward-and-forward motion. Its most frequent use is for working the slide-valve of a steam-engine. (Earlier eccentric circle, motion; see A. 2).

ΚΠ

1827 Mandelay Specif. Patent 5531 It consists..in the application of an eccentric to work the slide [valve].

1838 Public Wks. Great Brit. 69 The slides are worked by four fast eccentrics..instead of two loose ones.

1881 Mechanic §657. 302 The set screw in the eccentric shall be downwards.

3. [Compare A. 6b.] A person whose conduct is irregular, odd, or whimsical.

ΘΚΠ

the world > action or operation > behaviour > a standard of conduct > [noun] > deviation from normal standards of behaviour > one who

erratic1623

exorbitant1627

inconformable1633

non-conformant1654

original1675

nonconformista1677

eccentric1832

originalist1835

Bohemian1843

oddball1943

antisocial1945

left fielder1953

boho1958

alternative1982

the world > health and disease > mental health > mental illness > degree or type of mental illness > [noun] > slight madness > crankiness or eccentricity > person

fantastical1589

fantastic1598

earwig brain1599

extravagant1627

fanatic1644

energumen1660

original1675

toy-pate1702

gig1777

quiz1780

quoz?1780

rum touch1800

crotcheteer1815

pistol1828

eccentric1832

case1833

originalist1835

cure1856

crotchet-monger1874

curiosity1874

crank1881

crackpot1883

faddist1883

schwärmer1884

hard case1892

finger1899

mad hatter1905

nut1908

numéro1924

screwball1933

wack1938

fruitcake1942

odd bod1942

oddball1943

ghoster1953

raver1959

kook1960

flake1968

woo-woo1972

zonky1972

wacko1977

headbanger1981

the world > relative properties > order > disorder > irregularity > unconformity > abnormality > [noun] > oddness > odd person

singularist1593

singularitan1615

queer fellow1712

oddity1731

unaccountable1748

character1773

rum1788

eccentric1832

card1835

card1853

hard case1892

queer shot1900

rummy1909

hard thing1918

hardshot1924

quaint1939

odd bod1942

oddball1943

joker in the pack1963

quirky1975

1832 W. Scott St. Ronan's Well (new ed.) p. vii Men of every country playing the eccentric.

1850 C. Kingsley Alton Locke I. vi. 88 I have..given no description of the old eccentric's abode.

Compounds

Categories »

C1. In various parts connected with the eccentric that works the slide-valve in a steam-engine, as eccentric-catch, eccentric-hook, eccentric-rod. Also eccentric-hoop n., eccentric-ring n. or eccentric-strap n. the ring in which the eccentric revolves.

C2. In various machines or parts of machines, whose distinctive feature is that they are worked by an eccentric wheel or depend upon an eccentric arrangement; as eccentric-arbor, eccentric-chuck, eccentric-cutter (in Turning), eccentric-engraving, eccentric-fan, eccentric-gear, eccentric-pump.

ΚΠ

1859 M. I. O. Gascoigne Handbk. Turning (new ed.) 57 Eccentric turning..includes all the various..work for which the powers of a lathe are..celebrated.

1859 M. I. O. Gascoigne Handbk. Turning (new ed.) 87 Eccentric chuck.

1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 100 When the three screws are loosened the two parts of the eccentric arbor may be shifted.

Draft additions June 2015

Physiology. Of, relating to, or involving eccentric contraction of a muscle or muscles (see eccentric contraction n. at Additions). Contrasted with concentric adj. 2c.

ΚΠ

1858 C. F. Taylor in N. Amer. Jrnl. Homœopathy 7 34 The excentric and concentric movements supply precisely the conditions for remedying the physiological and mechanical impediments to healthful nutrition in both the retracted and relaxed conditions of the tissues.

1913 Brit. Med. Jrnl. 8 Feb. 277/1 The treatment of muscular paresis by means of the so-called eccentric movements originated in Sweden.

2006 J. C. Buckley Space Physiol. iv. 89 Eccentric exercise is when the muscle is active while it is being lengthened (i.e., when it is serving as a brake).

Draft additions June 2015

eccentric contraction n. Physiology the activity of a muscle or its cells which generates tension while the muscle is lengthening, typically to slow or control a movement.

ΚΠ

1858 C. F. Taylor in N. Amer. Jrnl. Homœopathy 7 30 (heading) Concentric contraction and excentric contraction.

1923 J. F. Williams Text-bk. Anat. & Physiol. vii. 169 In eccentric contraction the muscle contracts, but at the same time lengthens, giving up to the movement, yet holding the part momentarily.

2009 N.Y. Times (National ed.) 20 Aug. e8/1 An eccentric contraction exercise for the bicep is to bend your elbow and bring a weight to your shoulder, then lower the weight in a biceps curl.

This entry has not yet been fully updated (first published 1891; most recently modified version published online March 2022).

单词	eccentric
释义	eccentricadj.n. Brit. /ᵻkˈsɛntrɪk/, /ɛkˈsɛntrɪk/, U.S. /ɪkˈsɛntrɪk/ Forms: 1500s eccentrike, 1500s–1900s excentric(k(e, 1600s–1700s eccentrick, 1600s ecentrique, excentrique, 1600s– eccentric. Etymology: < late Latin eccentricus, < Greek ἔκκεντρος eccentric as opposed to concentric ( < ἐκ out of + κέντρον centre); see -ic suffix; the word is found in all the Romanic languages: French excentrique (14th cent. in Littré), Provençal excentric, Italian eccentrico, Spanish excéntrico. A. adj. 1. a. Of a circle: Not concentric with another circle (const. to). Of two or more circles: Not mutually concentric. Chiefly used of circles of which one is within the other. †eccentric orb n. in the Ptolemaic astronomy, an orbit not having the earth precisely in its centre (afterwards sometimes used in a Copernican sense: an orbit not having the sun precisely in its centre). ΘΚΠ the world > relative properties > number > geometry > shape or figure > [adjective] > two-dimensional > circular > concentric > not eccentric1556 eccentrical1641 1556 R. Record Castle of Knowl. 247 These two circles..are eccentrike, for that they haue not one common centre. 1621 R. Burton Anat. Melancholy ii. ii. iii. 324 Which howsoeuer Ptolemy,..maintaine, to be reall orbs, excentricke, concentricke. 1656 tr. T. Hobbes Elements Philos. iv. xxvi. 321 This annual Orbe [of the earth] is excentrique to the Sunne. †b. figurative. Not agreeing, having little in common. Const. from, to. Obsolete. ΘΚΠ the world > relative properties > order > disorder > disharmony or incongruity > [adjective] discordablea1393 discordanta1393 discordinga1398 incongruea1398 inconvenient1398 unaccording1398 discordc1415 disagreeablea1425 inconsutilec1450 unaccordanta1470 dissonant1490 disaccordanta1513 disagreeing?1526 incongruent1531 wide1531 unconsonant1535 dissonate1548 dissenting1550 dissident?c1550 unagreeable?1550 disconformc1554 discrepant1556 absonant1564 dissentany1586 disconsorted1589 disagreed1596 discordous1597 discordious1598 incorrespondent1599 dissentious1605 untunable1605 incongruous1611 unagreeing1611 unanswerable1611 eccentric1612 unconcurrent1613 disconsonant1614 dissentaneous1623 dissorting1631 uncorrespondent1631 discorrespondent1635 incoincident1636 unconcurring1639 eccentrical1640 unatonable1645 incompliant1647 pluranimous1650 disconformeda1658 inagreeable1657 inconsonant1658 disharmonious1659 inconcinn1660 discongruous1663 unharmonious1667 discoherent1675 uncongruous1709 inharmonious1749 immutual1768 unharmonized1803 unconsentaneous1818 inaccordant1822 uncorresponding1826 unharmonizing1851 non-concurring1866 discordful1867 disharmonic1887 non-concurrent1907 1612 F. Bacon Ess. (new ed.) xvi. 80 His owne endes: which must needs bee often Eccentrike to the ends of his master or state. 1666 J. Collins Let. in S. P. Rigaud & S. J. Rigaud Corr. Sci. Men 17th Cent. (1841) (modernized text) II. 463 My book of Accounts..is so eccentric to your studies as I thought it unworthy your acceptance. 1670 Sanderson in Ussher Power Princes (1683) Pref. A task..altogether excentrick from their function and calling. 2. That has its axis, its point of support, etc., otherwise than centrally placed. Cf. B. 2. ΘΚΠ the world > space > shape > misshapenness > [adjective] > asymmetrical or misproportioned misproportioned1552 asymmetral1615 eccentric1647 incommensurate1650 asymmetrous1661 asymmetrical1690 lopsided1711 uncertain1742 unsymmetrical1755 one-sided1857 alop1865 asymmetric1878 1647 N. Ward Simple Cobler Aggawam 45 Else the world will be Eccentrick, and then it will whirle. 1754 S. Savery in Philos. Trans. 1753 (Royal Soc.) 48 177 Large object-glasses for telescopes are not commonly well center'd..I..return'd [two faulty ones] and had two sent me again, as eccentric well nigh as the former ones. 1825 N. Wood Pract. Treat. Railroads 148 This eccentric circle is loose upon the axle..a circular hoop.. fits the circumference of the eccentric motion. 1831 J. Holland Treat. Manuf. Metal I. 92 That ingenious but simple contrivance the eccentric wheel. 3. a. Not centrally placed. Of an axis, etc.: Not passing through the centre. ΘΚΠ the world > space > shape > misshapenness > [adjective] > asymmetrical or misproportioned > about centre eccentric1858 excentric1866 off-centre1930 off-centred1955 1858 J. F. W. Herschel Outl. Astron. (ed. 5) iii. 83 If the axis be excentric. 1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 203 The organic centre of the transverse section does not usually coincide with the geometrical centre, as is easily seen in the transverse sections of most petioles and horizontal branches with an ‘eccentric’ pith. 1884 F. O. Bower & D. H. Scott tr. H. A. de Bary Compar. Anat. Phanerogams & Ferns 365 The position of the bundle in the root is from the first slightly eccentric. †b. Of a locality: Remote from the centre; out of the way. [So French quartier excentrique.] Obsolete. ΘΚΠ the world > space > distance > distance or farness > [adjective] > remote or inaccessible outc1425 inaccessible?a1475 out-way1532 deviate1575 unaccessible1596 reachless1597 devious1599 wandering1600 untouchable1622 outlying1651 back1683 no-nationa1756 out-of-the-way1756 outlandish1792 eccentric1800 outworld1808 out-by1816 outside1847 off-lying1859 unget-at-able1862 far-out1887 far-back1900 1800 T. Jefferson Let. 18 Jan. in Papers (2004) XXXI. 320 We have..a college (Wm. & Mary)..eccentric in it's position, exposed to bilious diseases & therefore abandoned by the public care. c. Physiology. (See quot. 1876.) ΚΠ 1876 J. Bernstein Five Senses 20 The sensation of sight can only take place..in the brain..and yet we transfer the object seen to the external world surrounding us. This fact is called the law of eccentric sensation. †4. Misused for: Having no centre. Obsolete. ΘΚΠ the world > existence and causation > existence > substantiality or concreteness > unsubstantiality or abstractness > [adjective] > superficial thin?c1225 superficialc1456 shallowc1595 superficiary1605 eccentric1633 outside1644 tenuious1656 swimminga1680 outwarda1682 two-dimensional1934 1633 T. Adams Comm. 2 Peter (iii. 7) 1228 Onely that is Eccentrique, which was never made. 1652 E. Benlowes Theophila ii. xli. 28 Deaths Hell Deaths Self out-deaths! Vindictive Place!..Excentrick Space! 1681 Table of Hard Words in S. Pordage tr. T. Willis Remaining Med. Wks. Eccentric, without centre. 5. a. Of orbital motion: Not referable to a fixed centre of revolution; not circular. Of a curve, an elliptic, parabolic, or hyperbolic orbit: Deviating (in greater or less degree) from a circular form. ΘΚΠ the world > the universe > heavenly body > movement of heavenly bodies > [adjective] > movement in orbit > eccentric eccentric1642 1642 J. Howell Instr. Forreine Travell xviii. 222 Let these Lights..be kept from irregular and eccentrique motions. 1693 R. Bentley Boyle Lect. vii. 33 They could not..acquire such Revolutions..in Ellipses very little Eccentric. 1796 J. Morse Amer. Universal Geogr. (new ed.) I. 32 Like other planets moving about the sun in very eccentric ellipses. 1866 J. F. W. Herschel Familiar Lect. Sci. Subj. 104 A comet moves round the sun..in an immensely elongated, or as it is termed a very eccentric, ellipse. b. transferred. Of a heavenly body: Moving in an orbit deviating (more or less) from a circle. ΚΠ 1734 tr. P. L. M. de Maupertuis Diss. Cœlestial Bodies 63 in J. Keill Exam. Burnet's Theory of Earth (ed. 2) The Comets are no more..than very excentric Planets. a1791 J. Wesley Serm. lxix. 8, in Wks. (1811) IX. 249 Those horrid, eccentric orbs. 1815 J. Smith Panorama Sci. & Art I. 581 When very eccentric planets or comets go round any flat star, in orbits much inclined to its equator. Categories » c. eccentric anomaly: the true anomaly of a planet moving in an eccentric orbit (opposed to the mean anomaly). eccentric equation: see equation n. 3a. 6. figurative. Regulated by no central control. a. Of actions, movements, and things in general: Irregular, anomalous, proceeding by no known method, capricious. ΘΚΠ the world > relative properties > order > disorder > irregularity > [adjective] uneven1390 irregular1483 scambling1592 prevaricant1644 eccentrica1649 vagous1660 erratical1698 scrambling1778 unregular1884 a1649 W. Drummond Poems (1656) 195 Finding all eccentrick in our times. 1792 E. Burke Consid. Present State Affairs in Wks. I. 586 The eccentrick aberration of Charles the Second. 1849 T. B. Macaulay Hist. Eng. I. 657 This eccentric clemency has perplexed some writers. b. Of persons and personal attributes: Deviating from usual methods, odd, whimsical. ΘΚΠ the world > action or operation > behaviour > a standard of conduct > [adjective] > not conforming to standard behaviour irregular1395 unformalc1449 informalc1475 disordered1561 monstrous1568 odd1577 irregulate1579 exorbitant1613 free-spirited1613 exorbitating1632 inconformable1633 extravagant1650 inconform1659 eccentric1685 unconformable1702 outrageous1778 unconventional1840 erratic1841 kinky1844 Bohemian1846 radical1869 Bohemic1874 nonconforming1899 hard case1904 jazz1917 offbeat1922 deviant1935 deviate1945 oddball1945 left field1951 way out1955 boho1958 non-conformant1960 sideways1969 the world > health and disease > mental health > mental illness > degree or type of mental illness > [adjective] > slightly mad > eccentric or cranky fantastical1531 odd1577 eccentric1685 fanaticized1827 cranky1850 bee-bonneted1856 cornery1887 screwy1887 kinky1889 crankish1892 ratty1895 batchy1898 batsc1901 batty1903 potty1920 offbeat1922 off-centre1930 wacky1935 screwball1936 up the creek1941 oddball1945 wackadoo1958 kooky1959 wiggy1963 flaky1964 nutball1968 woo-woo1971 wacko1977 off-kilter1985 wackadoodle1993 fantastic- the world > relative properties > order > disorder > irregularity > unconformity > abnormality > [adjective] > odd quaintc1325 awkc1440 queer?a1513 odd1578 quaintish1594 odd-conceiteda1616 odd-ceited1652 whimsical1675 singulara1684 eccentric1685 oddish1705 rummish1709 comical1713 odd-like1718 rum1750 queerish1775 funny1793 quare1805 rummy1828 kinky1844 quirkish1848 quirky1873 odd-gates1906 funny-peculiar1916 antrin1925 off-brand1929 fanciful- 1685 in N. Thompson Coll. Loyal Poems 6 The Brightest, yet the Most Excentrick Soul. 1695 Ld. Preston tr. Boethius Of Consol. Philos. ii. 68 The Extravagance of Excentrick and irregular Desires. 1771 H. Mackenzie Man of Feeling (1803) xxxiv. 61 His motives were rather excentric. 1801 R. L. Edgeworth in M. Edgeworth Moral Tales I. Pref. p. viii ‘Forester’ is the picture of an eccentric character. 1836 H. Rogers Life J. Howe (1863) ii. 19 That great, though unequal and eccentric genius. 7. a. quasi-adv. ΚΠ 1672 J. Dryden Conquest Granada i. v. i. 58 He moves excentrique, like a wandring star. b. absol. quasi-n. ΚΠ 1870 J. R. Lowell Among my Bks. (1873) 1st Ser. 203 Wordsworth never quite saw the distinction between the eccentric and the original. B. n. †1. [= eccentric circle , orb ; see A. 1] In Ptolemaic astronomy: A circle or orbit not having the earth precisely in its centre. Obsolete exc. Historical. ΘΚΠ the world > the universe > heavenly body > movement of heavenly bodies > [noun] > movement in orbit > orbit > eccentric eccentric1561 1398 J. Trevisa tr. Bartholomew de Glanville De Proprietatibus Rerum (1495) viii. xi. 317 The fyrste meuynge of a planete..is a cercle that hyghte Ecentricus.] 1561 R. Eden tr. M. Cortés Arte Nauigation i. xx. sig. C.vi Eccentricke, is a circle which hath his center distant..from the center of the worlde. 1646 Sir T. Browne Pseudodoxia Epidemica 293 The Perigeum or lowest part of the eccentric . View more context for this quotation 1725 I. Watts Logick ii. iii. 355 Excentricks and Epicycles of Ptolomy. 1783 W. F. Martyn Geogr. Mag. 1 Introd. 14 A number of circles called eccentrics and epicycles. figurative.1657 H. Hammond Some Profitable Direct. Priest & People 48 Reserving..somewhat for common calamities, somewhat as 'twere for the universal motion of the whole body, somewhat for excentricks. 2. Mechanics. A circular disc fixed on a revolving shaft, some distance out of centre, working freely in a ring (the eccentric strap), which is attached to a rod called an eccentric rod, by means of which the rotating motion of the shaft is converted into a backward-and-forward motion. Its most frequent use is for working the slide-valve of a steam-engine. (Earlier eccentric circle, motion; see A. 2). ΚΠ 1827 Mandelay Specif. Patent 5531 It consists..in the application of an eccentric to work the slide [valve]. 1838 Public Wks. Great Brit. 69 The slides are worked by four fast eccentrics..instead of two loose ones. 1881 Mechanic §657. 302 The set screw in the eccentric shall be downwards. 3. [Compare A. 6b.] A person whose conduct is irregular, odd, or whimsical. ΘΚΠ the world > action or operation > behaviour > a standard of conduct > [noun] > deviation from normal standards of behaviour > one who erratic1623 exorbitant1627 inconformable1633 non-conformant1654 original1675 nonconformista1677 eccentric1832 originalist1835 Bohemian1843 oddball1943 antisocial1945 left fielder1953 boho1958 alternative1982 the world > health and disease > mental health > mental illness > degree or type of mental illness > [noun] > slight madness > crankiness or eccentricity > person fantastical1589 fantastic1598 earwig brain1599 extravagant1627 fanatic1644 energumen1660 original1675 toy-pate1702 gig1777 quiz1780 quoz?1780 rum touch1800 crotcheteer1815 pistol1828 eccentric1832 case1833 originalist1835 cure1856 crotchet-monger1874 curiosity1874 crank1881 crackpot1883 faddist1883 schwärmer1884 hard case1892 finger1899 mad hatter1905 nut1908 numéro1924 screwball1933 wack1938 fruitcake1942 odd bod1942 oddball1943 ghoster1953 raver1959 kook1960 flake1968 woo-woo1972 zonky1972 wacko1977 headbanger1981 the world > relative properties > order > disorder > irregularity > unconformity > abnormality > [noun] > oddness > odd person singularist1593 singularitan1615 queer fellow1712 oddity1731 unaccountable1748 character1773 rum1788 eccentric1832 card1835 card1853 hard case1892 queer shot1900 rummy1909 hard thing1918 hardshot1924 quaint1939 odd bod1942 oddball1943 joker in the pack1963 quirky1975 1832 W. Scott St. Ronan's Well (new ed.) p. vii Men of every country playing the eccentric. 1850 C. Kingsley Alton Locke I. vi. 88 I have..given no description of the old eccentric's abode. Compounds Categories » C1. In various parts connected with the eccentric that works the slide-valve in a steam-engine, as eccentric-catch, eccentric-hook, eccentric-rod. Also eccentric-hoop n., eccentric-ring n. or eccentric-strap n. the ring in which the eccentric revolves. C2. In various machines or parts of machines, whose distinctive feature is that they are worked by an eccentric wheel or depend upon an eccentric arrangement; as eccentric-arbor, eccentric-chuck, eccentric-cutter (in Turning), eccentric-engraving, eccentric-fan, eccentric-gear, eccentric-pump. ΚΠ 1859 M. I. O. Gascoigne Handbk. Turning (new ed.) 57 Eccentric turning..includes all the various..work for which the powers of a lathe are..celebrated. 1859 M. I. O. Gascoigne Handbk. Turning (new ed.) 87 Eccentric chuck. 1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 100 When the three screws are loosened the two parts of the eccentric arbor may be shifted. Draft additions June 2015 Physiology. Of, relating to, or involving eccentric contraction of a muscle or muscles (see eccentric contraction n. at Additions). Contrasted with concentric adj. 2c. ΚΠ 1858 C. F. Taylor in N. Amer. Jrnl. Homœopathy 7 34 The excentric and concentric movements supply precisely the conditions for remedying the physiological and mechanical impediments to healthful nutrition in both the retracted and relaxed conditions of the tissues. 1913 Brit. Med. Jrnl. 8 Feb. 277/1 The treatment of muscular paresis by means of the so-called eccentric movements originated in Sweden. 2006 J. C. Buckley Space Physiol. iv. 89 Eccentric exercise is when the muscle is active while it is being lengthened (i.e., when it is serving as a brake). Draft additions June 2015 eccentric contraction n. Physiology the activity of a muscle or its cells which generates tension while the muscle is lengthening, typically to slow or control a movement. ΚΠ 1858 C. F. Taylor in N. Amer. Jrnl. Homœopathy 7 30 (heading) Concentric contraction and excentric contraction. 1923 J. F. Williams Text-bk. Anat. & Physiol. vii. 169 In eccentric contraction the muscle contracts, but at the same time lengthens, giving up to the movement, yet holding the part momentarily. 2009 N.Y. Times (National ed.) 20 Aug. e8/1 An eccentric contraction exercise for the bicep is to bend your elbow and bring a weight to your shoulder, then lower the weight in a biceps curl. This entry has not yet been fully updated (first published 1891; most recently modified version published online March 2022). < adj.n.1556
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