trajectoryadj.n.

/trəˈdʒɛktəri/

/ˈtradʒɪktəri/

Etymology: < medieval or modern Latin trājectōrius pertaining to trajection (compare late Latin trājectōrium a funnel, c400), whence French trajectoire ‘casting..conveying through or over’ (Cotgrave 1611); < Latin trāject- : see traject v., and -ory suffix¹. The noun corresponds to Latin trājectōria, feminine (Newton), in French trajectoire, noun (in Cotgrave).

A. adj.

1. Physics. Of or pertaining to that which is thrown or hurled through the air or space.

ΘΚΠ

the world > movement > impelling or driving > projecting through space or throwing > [adjective] > of or relating to projectile

trajectory1668

ballistic1764

1668 Philos. Trans. (Royal Soc.) 3 807 To explaine that Trajectory rectilinear motion, he subjects the Comet of A. 1652 to a very rigid Calculus.

1859 R. Mallet in J. F. W. Herschel Man. Sci. Enq. (Lords Commissioners Admiralty) (ed. 3) 349 Reach the ground after describing a trajectory path.

2. Physiology. Said of a gland into which lymphatic vessels convey their fluids. ? Obsolete.

ΘΚΠ

the world > life > the body > secretory organs > gland > types of gland > [adjective]

pituita1598

pituitary1615

lymphatic1649

conglomerated1656

conglobate1666

conglomerate1666

conglobated1676

lymphic1681

conglobulate1709

sudoriferous1713

sudorific1721

sebaceous1728

trajectory1747

cryptal1754

cryptous1804

muciparous1825

racemose1834

racemiform1837

ganglionary1842

muciferous1842

sudoriparous1851

sebiparous1853

racemous1854

sebiferous1858

perilymphangial1873

lymphadenoid1877

perilymphatic1877

mucigenous1881

pituital1890

tubuloracemosec1900

acinic1903

holocrine1905

merocrine1905

exocrine1911

endocrine1914

endocrinic1914

endocrinous1914

endocrinal1923

apocrine1926

eccrine1931

psychoendocrine1946

acinar1949

nodal1954

mucigenic1965

1747 tr. J. Astruc Academical Lect. Fevers 132 The common receptacles or trajectory glands of several lymphatic vessels.

B. n.

a. Physics. The path of any body moving under the action of given forces; by many modern writers restricted to that of a body not known to be moving, like a planet, in a closed curve or orbit; esp. the curve described by a projectile in its flight through the air.Hence loosely used by gun-makers for the height to which a bullet rises above the line of sight, as ‘the trajectory of this rifle is one inch in one hundred yards’.

ΘΚΠ

the world > movement > motion in a certain direction > [noun] > course or direction of movement > course of body moving under force

trajectory1696

traject18..

1696 W. Whiston New Theory of Earth i. 8 [This] must..change its rectilinear into a curvilinear trajectory.

1704 J. Harris Lexicon Technicum I Trajectory, of a Comet, is the Line which by its Motion it describes.

1715 tr. D. Gregory Elements Astron. I. i. §35. 73 Kepler, and several Philosophers after him, supposed the Trajectories of Comets to be Right lines.

1728 tr. I. Newton Treat. Syst. World 142 If this problem was resolved, we should thence have a method of determining the trajectories of Comets to the greatest accuracy.

1795 C. Hutton Math. & Philos. Dict. II. 603 Trajectory, a term often used generally for the path of any body moving either in a void, or in a medium that resists its motion... Trajectory of a Comet is its path or orbit, or the line it describes in its motion.

1828 J. M. Spearman Brit. Gunner 395 To determine, by theory, the range of a shot, and the form of its trajectory in the air.

1843 J. S. Mill Syst. Logic II. vi. x. §3 There might be others which, instead of an orbit, describe a trajectory, or a course not returning into itself.

1862 H. Spencer First Princ. ii. xi. §93. 315 It is common to assert that the trajectory of a cannon ball is a parabola.

b. transferred and figurative.

ΚΠ

1838 Brit. Critic XXIII. 1 An examination of..the somewhat eccentric trajectory of his [A. Knox's] thoughts.

1883 Lockyer in Times 8 Dec. 10 We have..got a straight trajectory of the abnormal sunsets from the Seychelles to Brazil.

1883 Cornhill Mag. Feb. 217 That majestic spirit passes..through all the upward or downward trajectory between heaven and hell.

1889 W. B. Carpenter Permanent Elem. Relig. Introd. 27 The trajectory of religion must rush away to the infinite beyond.

2. Geometry. A curve or surface passing through a given set of points, or intersecting each of a given series of curves or surfaces according to a given law, e.g. at a constant angle.

ΘΚΠ

the world > relative properties > number > geometry > curve > [noun] > locus

locus1675

evolute1704

place1704

trajectory1795

syntractory1820

focal surface1828

synharmonic1850

syntractrix1852

pedal1862

umbilical focal conic1862

stigmatic1863

synchronism1867

synchronous curve1867

Steinerian1873

tac-locus1873

strophoid1880

orthoptic locus1882

strophoidal1908

hypercycle1909

1795 C. Hutton Math. & Philos. Dict. II. 603 Newton (Princip. lib. 1. prob. 22) proposes to describe a Trajectory that shall pass through five given points.

1816 tr. S. F. Lacroix Elem. Treat. Differential & Integral Calculus 401 A problem celebrated from the earliest infancy of the Integral Calculus—the problem of Trajectories. Its object is to determine a curve which shall intersect all curves of a given species at a given angle.

1854 B. Price Treat. Infinitesimal Calculus II. xv. 505 If the [constant] angle between the two curves is a right angle the trajectory is said to be orthogonal.

3. A projectile, as a bullet. rare.

ΘΚΠ

the world > movement > impelling or driving > projecting through space or throwing > [noun] > throwing missiles > a projectile

cast1556

projectile1654

missile1656

forthcast1674

trajectile1860

trajectory1861

bird1913

1861 W. H. Russell in Times 29 July As far as I could judge, the men of the regiment were stout and strong material for arresting trajectories.

4. Aeronautics. (See quot. 1918.)

ΚΠ

1918 W. E. Dommett Dict. Aircraft 48 Trajectory bands, a device used in Parseval type airships consisting of a number of fabric bands passed through loops attached to the envelope for distributing the weight of the car evenly over the envelope.

This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2019).

单词	trajectory
释义	trajectoryadj.n. /trəˈdʒɛktəri//ˈtradʒɪktəri/ Etymology: < medieval or modern Latin trājectōrius pertaining to trajection (compare late Latin trājectōrium a funnel, c400), whence French trajectoire ‘casting..conveying through or over’ (Cotgrave 1611); < Latin trāject- : see traject v., and -ory suffix¹. The noun corresponds to Latin trājectōria, feminine (Newton), in French trajectoire, noun (in Cotgrave). A. adj. 1. Physics. Of or pertaining to that which is thrown or hurled through the air or space. ΘΚΠ the world > movement > impelling or driving > projecting through space or throwing > [adjective] > of or relating to projectile trajectory1668 ballistic1764 1668 Philos. Trans. (Royal Soc.) 3 807 To explaine that Trajectory rectilinear motion, he subjects the Comet of A. 1652 to a very rigid Calculus. 1859 R. Mallet in J. F. W. Herschel Man. Sci. Enq. (Lords Commissioners Admiralty) (ed. 3) 349 Reach the ground after describing a trajectory path. 2. Physiology. Said of a gland into which lymphatic vessels convey their fluids. ? Obsolete. ΘΚΠ the world > life > the body > secretory organs > gland > types of gland > [adjective] pituita1598 pituitary1615 lymphatic1649 conglomerated1656 conglobate1666 conglomerate1666 conglobated1676 lymphic1681 conglobulate1709 sudoriferous1713 sudorific1721 sebaceous1728 trajectory1747 cryptal1754 cryptous1804 muciparous1825 racemose1834 racemiform1837 ganglionary1842 muciferous1842 sudoriparous1851 sebiparous1853 racemous1854 sebiferous1858 perilymphangial1873 lymphadenoid1877 perilymphatic1877 mucigenous1881 pituital1890 tubuloracemosec1900 acinic1903 holocrine1905 merocrine1905 exocrine1911 endocrine1914 endocrinic1914 endocrinous1914 endocrinal1923 apocrine1926 eccrine1931 psychoendocrine1946 acinar1949 nodal1954 mucigenic1965 1747 tr. J. Astruc Academical Lect. Fevers 132 The common receptacles or trajectory glands of several lymphatic vessels. B. n. 1. a. Physics. The path of any body moving under the action of given forces; by many modern writers restricted to that of a body not known to be moving, like a planet, in a closed curve or orbit; esp. the curve described by a projectile in its flight through the air.Hence loosely used by gun-makers for the height to which a bullet rises above the line of sight, as ‘the trajectory of this rifle is one inch in one hundred yards’. ΘΚΠ the world > movement > motion in a certain direction > [noun] > course or direction of movement > course of body moving under force trajectory1696 traject18.. 1696 W. Whiston New Theory of Earth i. 8 [This] must..change its rectilinear into a curvilinear trajectory. 1704 J. Harris Lexicon Technicum I Trajectory, of a Comet, is the Line which by its Motion it describes. 1715 tr. D. Gregory Elements Astron. I. i. §35. 73 Kepler, and several Philosophers after him, supposed the Trajectories of Comets to be Right lines. 1728 tr. I. Newton Treat. Syst. World 142 If this problem was resolved, we should thence have a method of determining the trajectories of Comets to the greatest accuracy. 1795 C. Hutton Math. & Philos. Dict. II. 603 Trajectory, a term often used generally for the path of any body moving either in a void, or in a medium that resists its motion... Trajectory of a Comet is its path or orbit, or the line it describes in its motion. 1828 J. M. Spearman Brit. Gunner 395 To determine, by theory, the range of a shot, and the form of its trajectory in the air. 1843 J. S. Mill Syst. Logic II. vi. x. §3 There might be others which, instead of an orbit, describe a trajectory, or a course not returning into itself. 1862 H. Spencer First Princ. ii. xi. §93. 315 It is common to assert that the trajectory of a cannon ball is a parabola. b. transferred and figurative. ΚΠ 1838 Brit. Critic XXIII. 1 An examination of..the somewhat eccentric trajectory of his [A. Knox's] thoughts. 1883 Lockyer in Times 8 Dec. 10 We have..got a straight trajectory of the abnormal sunsets from the Seychelles to Brazil. 1883 Cornhill Mag. Feb. 217 That majestic spirit passes..through all the upward or downward trajectory between heaven and hell. 1889 W. B. Carpenter Permanent Elem. Relig. Introd. 27 The trajectory of religion must rush away to the infinite beyond. 2. Geometry. A curve or surface passing through a given set of points, or intersecting each of a given series of curves or surfaces according to a given law, e.g. at a constant angle. ΘΚΠ the world > relative properties > number > geometry > curve > [noun] > locus locus1675 evolute1704 place1704 trajectory1795 syntractory1820 focal surface1828 synharmonic1850 syntractrix1852 pedal1862 umbilical focal conic1862 umbilical focal conic1862 stigmatic1863 synchronism1867 synchronous curve1867 Steinerian1873 tac-locus1873 strophoid1880 orthoptic locus1882 strophoidal1908 hypercycle1909 1795 C. Hutton Math. & Philos. Dict. II. 603 Newton (Princip. lib. 1. prob. 22) proposes to describe a Trajectory that shall pass through five given points. 1816 tr. S. F. Lacroix Elem. Treat. Differential & Integral Calculus 401 A problem celebrated from the earliest infancy of the Integral Calculus—the problem of Trajectories. Its object is to determine a curve which shall intersect all curves of a given species at a given angle. 1854 B. Price Treat. Infinitesimal Calculus II. xv. 505 If the [constant] angle between the two curves is a right angle the trajectory is said to be orthogonal. 3. A projectile, as a bullet. rare. ΘΚΠ the world > movement > impelling or driving > projecting through space or throwing > [noun] > throwing missiles > a projectile cast1556 projectile1654 missile1656 forthcast1674 trajectile1860 trajectory1861 bird1913 1861 W. H. Russell in Times 29 July As far as I could judge, the men of the regiment were stout and strong material for arresting trajectories. 4. Aeronautics. (See quot. 1918.) ΚΠ 1918 W. E. Dommett Dict. Aircraft 48 Trajectory bands, a device used in Parseval type airships consisting of a number of fabric bands passed through loops attached to the envelope for distributing the weight of the car evenly over the envelope. This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2019). < adj.n.1668
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