centrumn.

Brit.

/ˈsɛntrəm/, U.S.

/ˈsɛntrəm/

Inflections: Plural centra, centrums.

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

Etymology: < classical Latin centrum centre n.¹ In sense 3 after German Centrum (18th cent. or earlier in this sense; now usually Zentrum ), specific use of Centrum centre n.¹; compare epicentrum n.In plural form centra after the Latin plural form.

1. = centre n.¹ (in various senses); the middle point or part of anything; the innermost part or portion. Now rare except in sense 2.

ΘΚΠ

the world > space > relative position > central condition or position > [noun] > central part > central or innermost part

hearteOE

yolk1340

centruma1398

marrow1434

core1614

kernela1642

centrals1649

nucleus1702

centrepiece1739

a1398 J. Trevisa tr. Bartholomaeus Anglicus De Proprietatibus Rerum (BL Add. 27944) (1975) I. vi. xxiv. 332 Þe lyme of þe comoun witte is ibounde, the whiche lyme is centrum and middel of alle þe parties.

a1544 R. Barlow tr. M. Fernández de Enciso Brief Summe Geogr. (1932) 2 Thys spere is a bodie rounde under a superfice in the myddis wherof is a poynte from the whiche all the lynes elevate to the superfice be equalle. This point is called centrum of the spere.

1598 A. M. tr. J. Guillemeau Frenche Chirurg. 7/2 Heer vnder is situated, the greate revolutione of the gutte Ieiunum, and this is the Centrum of the bodye.

1673 W. Cooper tr. Jehior vii. 23 in Philos. Epit. This body they drown in a Water, which floweth out of the Centrum of the Vegetables.

1679 E. Halley Plain Declar. Heavens Flatform 1 You must place one foot of the Compassis in the Centrum of the Heavens-Mirrour, upon the Dial A, and the other downewards, as far as the Degree of the Declination of the Sun or Starres.

1756 tr. J. G. Keyssler Trav. I. xv. 110 The middle or centrum of this creature is broad and thick, branching out on all sides into a great number of limbs.

1799 J. J. Weirtz Let. 5 Jan. in Missionary Mag. 15 Apr. 184 From several members of the Society in this city [sc. Frankfurt] for propagating true piety and Christianity in Germany and Switzerland, the centrum of which is at Basil.

1816 Travellers Guide through United Netherlands 83 Situated near the sea..in the centrum of Europe, the dutch could not but avail themselves of so great advantages for supplying by navigation for the sterility of the soil.

1898 J. H. de Vries tr. A. Kuyper Encycl. Sacred Theol. ii. iii. 162 If palingenesis operated immediately from the centrum of our inner life to the outermost circumference of being and consciousness.

1968 East Apr. 42/3 Extend your right arm, open your right hand and concentrate on the power in your centrum, located in the abdominal region.

2. Anatomy and Zoology. The solid central portion of a vertebra, to which the arches and processes are attached; = body n. 6f.

ΘΚΠ

the world > animals > vertebrates > [noun] > body of

centrum1838

the world > life > the body > structural parts > bone or bones > spine > [noun] > vertebra of > parts of

pedicle1828

centrum1838

neurapophysis1870

zygostyle1881

pleurocentrum1882

neurocentrum1884

1838 Proc. Geol. Soc. 2 664 The centrum, or body of the vertebræ.

1871 C. Darwin Descent of Man I. i. 29 The os coccyx is short, usually including only four vertebræ; and these are in a rudimental condition, for they consist, with the exception of the basal one, of the centrum alone.

1903 Trans. Kansas Acad. Sci. 18 95 The vertebræ have twin spines on each side of the centra.

1946 Prof. Papers U.S. Geol. Surv. No. 210-C 31/1 The first caudal in Alamosaurus is characterized by its biconvex centrum, a feature found elsewhere in the Reptilia only in the Crocodilidae.

1975 L. M. Ashley et al. in W. E. Ribelin & G. Migaki Pathol. Fishes xxxi. 770 The disease in the vitamin C-deficient fish resulted in displaced centrums.

2005 R. McNeill Alexander Human Bones iv. 103 The head (extreme end) of the rib articulates with a facet on the centrum of a thoracic vertebra.

3. Geology. = hypocentre n. 1. Cf. epicentre n. 1. Now disused.Originally thought to be a cavity beneath the surface of the earth.

ΘΚΠ

the world > the earth > structure of the earth > formation of features > convulsion > [noun] > earthquake > epicentre

centrum1874

epicentrum1874

epicentre1880

hypocentre1905

1874 Amer. Jrnl. Sci. 108 406 Lines drawn perpendicular to these planes would, therefore, intersect in the focus or ‘centrum’.

1886 J. Milne Earthquakes v. 90 Seebach's velocity is a true transit velocity, and its determination is dependent on the assumption that the shock radiated from the centrum and not from the epicentrum.

1938 L. D. Leet Pract. Seismol. viii. 280 The term ‘centrum’ was modified to hypocenter, signifying the deep center, or focus; and epicenter, or point on the surface vertically above the focus.

1952 O. D. von Engeln & K. E. Caster Geol. xiii. 172 Waves..spreading in all directions from the site of displacement, which is referred to as the focus or centrum of the earthquake.

This entry has been updated (OED Third Edition, June 2016; most recently modified version published online December 2021).

单词	centrum
释义	centrumn. Brit. /ˈsɛntrəm/, U.S. /ˈsɛntrəm/ Inflections: Plural centra, centrums. Origin: A borrowing from Latin. Etymon: Latin centrum. Etymology: < classical Latin centrum centre n.¹ In sense 3 after German Centrum (18th cent. or earlier in this sense; now usually Zentrum ), specific use of Centrum centre n.¹; compare epicentrum n.In plural form centra after the Latin plural form. 1. = centre n.¹ (in various senses); the middle point or part of anything; the innermost part or portion. Now rare except in sense 2. ΘΚΠ the world > space > relative position > central condition or position > [noun] > central part > central or innermost part hearteOE yolk1340 centruma1398 marrow1434 core1614 kernela1642 centrals1649 nucleus1702 centrepiece1739 a1398 J. Trevisa tr. Bartholomaeus Anglicus De Proprietatibus Rerum (BL Add. 27944) (1975) I. vi. xxiv. 332 Þe lyme of þe comoun witte is ibounde, the whiche lyme is centrum and middel of alle þe parties. a1544 R. Barlow tr. M. Fernández de Enciso Brief Summe Geogr. (1932) 2 Thys spere is a bodie rounde under a superfice in the myddis wherof is a poynte from the whiche all the lynes elevate to the superfice be equalle. This point is called centrum of the spere. 1598 A. M. tr. J. Guillemeau Frenche Chirurg. 7/2 Heer vnder is situated, the greate revolutione of the gutte Ieiunum, and this is the Centrum of the bodye. 1673 W. Cooper tr. Jehior vii. 23 in Philos. Epit. This body they drown in a Water, which floweth out of the Centrum of the Vegetables. 1679 E. Halley Plain Declar. Heavens Flatform 1 You must place one foot of the Compassis in the Centrum of the Heavens-Mirrour, upon the Dial A, and the other downewards, as far as the Degree of the Declination of the Sun or Starres. 1756 tr. J. G. Keyssler Trav. I. xv. 110 The middle or centrum of this creature is broad and thick, branching out on all sides into a great number of limbs. 1799 J. J. Weirtz Let. 5 Jan. in Missionary Mag. 15 Apr. 184 From several members of the Society in this city [sc. Frankfurt] for propagating true piety and Christianity in Germany and Switzerland, the centrum of which is at Basil. 1816 Travellers Guide through United Netherlands 83 Situated near the sea..in the centrum of Europe, the dutch could not but avail themselves of so great advantages for supplying by navigation for the sterility of the soil. 1898 J. H. de Vries tr. A. Kuyper Encycl. Sacred Theol. ii. iii. 162 If palingenesis operated immediately from the centrum of our inner life to the outermost circumference of being and consciousness. 1968 East Apr. 42/3 Extend your right arm, open your right hand and concentrate on the power in your centrum, located in the abdominal region. 2. Anatomy and Zoology. The solid central portion of a vertebra, to which the arches and processes are attached; = body n. 6f. ΘΚΠ the world > animals > vertebrates > [noun] > body of centrum1838 the world > life > the body > structural parts > bone or bones > spine > [noun] > vertebra of > parts of pedicle1828 centrum1838 neurapophysis1870 zygostyle1881 pleurocentrum1882 neurocentrum1884 1838 Proc. Geol. Soc. 2 664 The centrum, or body of the vertebræ. 1871 C. Darwin Descent of Man I. i. 29 The os coccyx is short, usually including only four vertebræ; and these are in a rudimental condition, for they consist, with the exception of the basal one, of the centrum alone. 1903 Trans. Kansas Acad. Sci. 18 95 The vertebræ have twin spines on each side of the centra. 1946 Prof. Papers U.S. Geol. Surv. No. 210-C 31/1 The first caudal in Alamosaurus is characterized by its biconvex centrum, a feature found elsewhere in the Reptilia only in the Crocodilidae. 1975 L. M. Ashley et al. in W. E. Ribelin & G. Migaki Pathol. Fishes xxxi. 770 The disease in the vitamin C-deficient fish resulted in displaced centrums. 2005 R. McNeill Alexander Human Bones iv. 103 The head (extreme end) of the rib articulates with a facet on the centrum of a thoracic vertebra. 3. Geology. = hypocentre n. 1. Cf. epicentre n. 1. Now disused.Originally thought to be a cavity beneath the surface of the earth. ΘΚΠ the world > the earth > structure of the earth > formation of features > convulsion > [noun] > earthquake > epicentre centrum1874 epicentrum1874 epicentre1880 hypocentre1905 1874 Amer. Jrnl. Sci. 108 406 Lines drawn perpendicular to these planes would, therefore, intersect in the focus or ‘centrum’. 1886 J. Milne Earthquakes v. 90 Seebach's velocity is a true transit velocity, and its determination is dependent on the assumption that the shock radiated from the centrum and not from the epicentrum. 1938 L. D. Leet Pract. Seismol. viii. 280 The term ‘centrum’ was modified to hypocenter, signifying the deep center, or focus; and epicenter, or point on the surface vertically above the focus. 1952 O. D. von Engeln & K. E. Caster Geol. xiii. 172 Waves..spreading in all directions from the site of displacement, which is referred to as the focus or centrum of the earthquake. This entry has been updated (OED Third Edition, June 2016; most recently modified version published online December 2021). < n.a1398
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