point d'arrêtn.

Brit.

/ˌpwã daˈrɛt/, U.S.

/ˌpwɑn(t) dɑˈrɛt/

Inflections: Plural points d'arrêt.

Origin: A borrowing from French. Etymon: French point d'arrêt.

Etymology: < French point d'arrêt stopping point (late 17th cent., in non-technical uses) < point point n.¹ + de de prep. + arrêt (see arrest n.¹).

Geometry (now rare).

A point at which a branch of a curve terminates; an end point of a curve; also in extended use.

ΚΠ

1869 Nature 23 Dec. 222/1 The loci for poles to real orbits..exhibit a singular figure, the true locus having points d'arrêt on the boundary lines.

1871 I. Todhunter Diff. Calculus (ed. 5) xxii. §304 A point d'arrêt is a point at which a single branch of a curve suddenly stops.

1887 Mind 12 64 The existence of a singular point, or a point d'arrêt, in what we may call the feeling-curve, where intense pleasure passes more or less abruptly into intense pain.

1934 Amer. Math. Monthly 41 159 These points are not ‘points d'arret’, but they are cusps of the complete curve.

1958 Van Nostrand's Sci. Encycl. (ed. 3) 1504 There are further possibilities for transcendental curves: end point, terminal point, or point d'arrêt, the curve terminates abruptly.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	point darrêt
释义	point d'arrêtn. Brit. /ˌpwã daˈrɛt/, U.S. /ˌpwɑn(t) dɑˈrɛt/ Inflections: Plural points d'arrêt. Origin: A borrowing from French. Etymon: French point d'arrêt. Etymology: < French point d'arrêt stopping point (late 17th cent., in non-technical uses) < point point n.¹ + de de prep. + arrêt (see arrest n.¹). Geometry (now rare). A point at which a branch of a curve terminates; an end point of a curve; also in extended use. ΚΠ 1869 Nature 23 Dec. 222/1 The loci for poles to real orbits..exhibit a singular figure, the true locus having points d'arrêt on the boundary lines. 1871 I. Todhunter Diff. Calculus (ed. 5) xxii. §304 A point d'arrêt is a point at which a single branch of a curve suddenly stops. 1887 Mind 12 64 The existence of a singular point, or a point d'arrêt, in what we may call the feeling-curve, where intense pleasure passes more or less abruptly into intense pain. 1934 Amer. Math. Monthly 41 159 These points are not ‘points d'arret’, but they are cusps of the complete curve. 1958 Van Nostrand's Sci. Encycl. (ed. 3) 1504 There are further possibilities for transcendental curves: end point, terminal point, or point d'arrêt, the curve terminates abruptly. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1869
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