conicadj.n.

Brit.

/ˈkɒnɪk/, U.S.

/ˈkɑnɪk/

Forms: Also 1500s -ike, -yke, 1600s– -ique, 1600s–1700s -ick.

Etymology: modern < Greek κωνικός cone-shaped, < κῶνος cone: see -ic suffix. Compare French conique (not in Cotgrave 1611).

A. adj.

1. Having the form of a cone; cone-shaped, conical adj.

ΘΚΠ

the world > space > shape > curvature > curved three-dimensional shape or body > [adjective] > conical

pineatea1400

conical1570

conic1614

cone-like1665

sugar-loafed1702

top-like?1711

coniformc1790

extinguisher-shaped1840

cone-shaped1851

coned1878

extinguisher-like1881

piniform1890

1614 J. Selden Titles of Honor 150 [Heraclius' Crown] being of gold, and raisd with variety of conique plates.

1647 H. More Philos. Poems i. iii. vi. (R.) An anvile form'd in conick wise.

1706 London Gaz. No. 4292/3 Letters Patents for Enlightening the Suburbs of London..by new invented Lights or Lamps, called Conic-Lamps.

1776 W. Anderson Jrnl. 1 Aug. in J. Cook Jrnls. (1967) III. ii. 729 A succession of conic hills.

1854 S. P. Woodward Man. Mollusca ii. 318 Shell oblong; right valve with a curved, conic tooth in front of the..cartilage-pit.

1870 J. D. Hooker Student's Flora Brit. Islands 387 Styles 3, conic, persistent.

2. Of or pertaining to a cone. conic section n. a figure formed by the section of a right circular cone by a plane; a plane curve of the second degree. If the inclination of the cutting plane to the axis of the cone be greater than that of the edge of the cone, the section is an ellipse n. (with the circle as a particular case when the plane is perpendicular to the axis; if less, a hyperbola n.; if the plane be parallel to the edge, a parabola n. (The pair of intersecting straight lines formed by a section through the vertex—strictly a particular case of the hyperbola—is not usually reckoned as a conic section.)

ΘΚΠ

the world > relative properties > number > geometry > curve > [noun] > conic section

conical section (also conical line)1570

conic section1570

subcontrary1842

conic1863

the world > space > shape > curvature > curved three-dimensional shape or body > [adjective] > conical > of or relating to cone

conic1570

conical1570

the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > conical

conic1570

conical1570

conoidal1571

1570 J. Dee in H. Billingsley tr. Euclid Elements Geom. Math. Præf. sig. iij Our fourth Pyramidall, or Conike line.

1664 H. Power Exper. Philos. Concl. 187 The Forming of Conick Sections in Dioptricks..accounted as insuperable difficulties.

1706 Phillips's New World of Words (new ed.) Conical..as Conick Sections, i.e. the three Sections or Divisions of a Cone, call'd Ellipsis, Hyperbola and Parabola.

1714 tr. I. Barrow Euclide's Elements (rev. ed.) 517 This method don't suppose the conic surface..to consist of as many parallel circumferences perpetually increasing from the vertex, or decreasing from the base.

1807 C. Hutton Course Math. (ed. 5) II. 93 There arise five different figures or sections, namely, a triangle, a circle, an ellipsis, an hyperbola, and a parabola: the three last of which only are peculiarly called Conic Sections.

1866 R. A. Proctor Handbk. Stars 18 The projection is a closed curve, which (being a conic section) must be either a circle or an ellipse.

B. n.

1. plural conics: that branch of Geometry which treats of the cone and the figures formed by plane sections of it. (Now regarded as the plural of 2, as if = conic sections (conic section n.).)

ΘΚΠ

the world > relative properties > number > geometry > [noun] > branches of

planimetrya1393

conic?a1560

helicosophy1570

stereometry1570

spheric1660

planometry1669

mensuration1704

polygonometry1791

analytical geometry1802

isoperimetry1811

analytic geometry1817

algebraic geometry1821

coordinate geometry1837

non-Euclidean geometry1872

differential geometry1877

pangeometry1878

projective geometry1878

metageometry1890

Riemann geometry1895

variable geometry1957

?a1560 L. Digges Geom. Pract.: Pantometria (1571) Pref. sig. A ij A number of rules and preceptes, gathered out of Euclide, Archimedes and Appolonius Pergeus his Conykes.

1850 J. Greenwood Sailor's Sea-bk. 109 The science of Conics is of the highest utility.

1891 N.E.D. at Conic Mod. Analytical and Geometrical Conics.

2. A conic section: see A. 2.

ΘΚΠ

the world > relative properties > number > geometry > curve > [noun] > conic section

conical section (also conical line)1570

conic section1570

subcontrary1842

conic1863

1863 G. Salmon Conic Sections (ed. 4) xiiii. 221 Two conics cannot have more than four points common.

1885 C. Leudesdorf tr. L. Cremona Elements Projective Geom. 15 The curve which is homological with a circle is a conic.

Compounds

conic-billed adj.

ΚΠ

1837 J. R. McCulloch Statist. Acct. Brit. Empire I. i. i. 152 (heading) Tribe Conirostres. Conic-billed Birds.

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

单词	conic
释义	conicadj.n. Brit. /ˈkɒnɪk/, U.S. /ˈkɑnɪk/ Forms: Also 1500s -ike, -yke, 1600s– -ique, 1600s–1700s -ick. Etymology: modern < Greek κωνικός cone-shaped, < κῶνος cone: see -ic suffix. Compare French conique (not in Cotgrave 1611). A. adj. 1. Having the form of a cone; cone-shaped, conical adj. ΘΚΠ the world > space > shape > curvature > curved three-dimensional shape or body > [adjective] > conical pineatea1400 conical1570 conic1614 cone-like1665 sugar-loafed1702 top-like?1711 coniformc1790 extinguisher-shaped1840 cone-shaped1851 coned1878 extinguisher-like1881 piniform1890 1614 J. Selden Titles of Honor 150 [Heraclius' Crown] being of gold, and raisd with variety of conique plates. 1647 H. More Philos. Poems i. iii. vi. (R.) An anvile form'd in conick wise. 1706 London Gaz. No. 4292/3 Letters Patents for Enlightening the Suburbs of London..by new invented Lights or Lamps, called Conic-Lamps. 1776 W. Anderson Jrnl. 1 Aug. in J. Cook Jrnls. (1967) III. ii. 729 A succession of conic hills. 1854 S. P. Woodward Man. Mollusca ii. 318 Shell oblong; right valve with a curved, conic tooth in front of the..cartilage-pit. 1870 J. D. Hooker Student's Flora Brit. Islands 387 Styles 3, conic, persistent. 2. Of or pertaining to a cone. conic section n. a figure formed by the section of a right circular cone by a plane; a plane curve of the second degree. If the inclination of the cutting plane to the axis of the cone be greater than that of the edge of the cone, the section is an ellipse n. (with the circle as a particular case when the plane is perpendicular to the axis; if less, a hyperbola n.; if the plane be parallel to the edge, a parabola n. (The pair of intersecting straight lines formed by a section through the vertex—strictly a particular case of the hyperbola—is not usually reckoned as a conic section.) ΘΚΠ the world > relative properties > number > geometry > curve > [noun] > conic section conical section (also conical line)1570 conic section1570 subcontrary1842 conic1863 the world > space > shape > curvature > curved three-dimensional shape or body > [adjective] > conical > of or relating to cone conic1570 conical1570 the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > conical conic1570 conical1570 conoidal1571 1570 J. Dee in H. Billingsley tr. Euclid Elements Geom. Math. Præf. sig. iij Our fourth Pyramidall, or Conike line. 1664 H. Power Exper. Philos. Concl. 187 The Forming of Conick Sections in Dioptricks..accounted as insuperable difficulties. 1706 Phillips's New World of Words (new ed.) Conical..as Conick Sections, i.e. the three Sections or Divisions of a Cone, call'd Ellipsis, Hyperbola and Parabola. 1714 tr. I. Barrow Euclide's Elements (rev. ed.) 517 This method don't suppose the conic surface..to consist of as many parallel circumferences perpetually increasing from the vertex, or decreasing from the base. 1807 C. Hutton Course Math. (ed. 5) II. 93 There arise five different figures or sections, namely, a triangle, a circle, an ellipsis, an hyperbola, and a parabola: the three last of which only are peculiarly called Conic Sections. 1866 R. A. Proctor Handbk. Stars 18 The projection is a closed curve, which (being a conic section) must be either a circle or an ellipse. B. n. 1. plural conics: that branch of Geometry which treats of the cone and the figures formed by plane sections of it. (Now regarded as the plural of 2, as if = conic sections (conic section n.).) ΘΚΠ the world > relative properties > number > geometry > [noun] > branches of planimetrya1393 conic?a1560 helicosophy1570 stereometry1570 spheric1660 planometry1669 mensuration1704 polygonometry1791 analytical geometry1802 isoperimetry1811 analytic geometry1817 algebraic geometry1821 coordinate geometry1837 non-Euclidean geometry1872 differential geometry1877 pangeometry1878 projective geometry1878 metageometry1890 Riemann geometry1895 variable geometry1957 ?a1560 L. Digges Geom. Pract.: Pantometria (1571) Pref. sig. A ij A number of rules and preceptes, gathered out of Euclide, Archimedes and Appolonius Pergeus his Conykes. 1850 J. Greenwood Sailor's Sea-bk. 109 The science of Conics is of the highest utility. 1891 N.E.D. at Conic Mod. Analytical and Geometrical Conics. 2. A conic section: see A. 2. ΘΚΠ the world > relative properties > number > geometry > curve > [noun] > conic section conical section (also conical line)1570 conic section1570 subcontrary1842 conic1863 1863 G. Salmon Conic Sections (ed. 4) xiiii. 221 Two conics cannot have more than four points common. 1885 C. Leudesdorf tr. L. Cremona Elements Projective Geom. 15 The curve which is homological with a circle is a conic. Compounds conic-billed adj. ΚΠ 1837 J. R. McCulloch Statist. Acct. Brit. Empire I. i. i. 152 (heading) Tribe Conirostres. Conic-billed Birds. This entry has not yet been fully updated (first published 1891; most recently modified version published online March 2022). < adj.n.?a1560
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