semi-conjugateadj.n.

Etymology: semi- prefix 2b(b).Previous versions of the OED give the stress as: semi-ˈconjugate.

Mathematics.

semi-conjugate axis, semi diameter = conjugate semiaxis, semidiameter: see conjugate adj. 6a there, and quot. 1885 at semidiameter n. a. Also elliptical (as n.) for these.

ΘΚΠ

the world > relative properties > number > geometry > [adjective] > of geometrical relation

reciprocal1570

regular1570

projectivea1652

semi-conjugate axis1743

homographic1859

symmetric1860

confocal1867

correlative1881

involutorial1885

conjugate1902

antisymmetrical1913

homoeomorphic1918

homotopic1918

isometric1952

1743 W. Emerson Doctr. Fluxions 187 Let AD be an Hyperbola, B the Center, BA = a, Semi-conjugate = b.

1791 Philos. Trans. 1790 (Royal Soc.) 80 536 CV and CW being a kind of semitransverse and semiconjugate axes to the elliptic track on the spherical surface.

1882 G. M. Minchin Uniplanar Kinematics 130 An ellipse referred to two semi-conjugate diameters, pa, pb, as axes.

This entry has not yet been fully updated (first published 1911; most recently modified version published online June 2019).

单词	semi-conjugate
释义	semi-conjugateadj.n. Etymology: semi- prefix 2b(b).Previous versions of the OED give the stress as: semi-ˈconjugate. Mathematics. semi-conjugate axis, semi diameter = conjugate semiaxis, semidiameter: see conjugate adj. 6a there, and quot. 1885 at semidiameter n. a. Also elliptical (as n.) for these. ΘΚΠ the world > relative properties > number > geometry > [adjective] > of geometrical relation reciprocal1570 regular1570 projectivea1652 semi-conjugate axis1743 homographic1859 symmetric1860 confocal1867 correlative1881 involutorial1885 conjugate1902 antisymmetrical1913 homoeomorphic1918 homotopic1918 isometric1952 1743 W. Emerson Doctr. Fluxions 187 Let AD be an Hyperbola, B the Center, BA = a, Semi-conjugate = b. 1791 Philos. Trans. 1790 (Royal Soc.) 80 536 CV and CW being a kind of semitransverse and semiconjugate axes to the elliptic track on the spherical surface. 1882 G. M. Minchin Uniplanar Kinematics 130 An ellipse referred to two semi-conjugate diameters, pa, pb, as axes. This entry has not yet been fully updated (first published 1911; most recently modified version published online June 2019). < adj.n.1743
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