bicircularadj.

Etymology: bi- comb. form 1a, 1b.Previous versions of the OED give the stress as: biˈcircular.

Mathematics.

Applied to a class of quartic curves each of which passes twice through each of the circular points at infinity, and thus resembles (analytically, and sometimes in form) a pair of circles.

ΘΚΠ

the world > relative properties > number > geometry > curve > [adjective] > relating to curve of specific order

conchoidal1666

semi-cubic1673

semi-cubical1674

cubical1728

cissoidal1796

bicircular1867

1867 J. Casey Bicircular Quartics in Trans. Royal Irish Acad.: Sci. 24 458 A bicircular quartic; that is,..a quartic having the two circular points at infinity as double points.

1872 B. Williamson Elem. Treat. Differential Calculus xi. 195 A curve of the fourth degree of the class called ‘bicircular quartics’.

1873 G. Salmon Treat. Higher Plane Curves (ed. 2) vi. 231 Quartics with two nodes, in the case where these are the circular points at infinity, have been extensively studied under the name of bicircular quartics.

1880 Athenæum 20 Nov. 678/3 Bicircular Quartics.

This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2022).

单词	bicircular
释义	bicircularadj. Etymology: bi- comb. form 1a, 1b.Previous versions of the OED give the stress as: biˈcircular. Mathematics. Applied to a class of quartic curves each of which passes twice through each of the circular points at infinity, and thus resembles (analytically, and sometimes in form) a pair of circles. ΘΚΠ the world > relative properties > number > geometry > curve > [adjective] > relating to curve of specific order conchoidal1666 semi-cubic1673 semi-cubical1674 cubical1728 cissoidal1796 bicircular1867 1867 J. Casey Bicircular Quartics in Trans. Royal Irish Acad.: Sci. 24 458 A bicircular quartic; that is,..a quartic having the two circular points at infinity as double points. 1872 B. Williamson Elem. Treat. Differential Calculus xi. 195 A curve of the fourth degree of the class called ‘bicircular quartics’. 1873 G. Salmon Treat. Higher Plane Curves (ed. 2) vi. 231 Quartics with two nodes, in the case where these are the circular points at infinity, have been extensively studied under the name of bicircular quartics. 1880 Athenæum 20 Nov. 678/3 Bicircular Quartics. This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2022). < adj.1867
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