evolventadj.n.

Brit.

/ᵻˈvɒlv(ə)nt/, U.S.

/əˈvɔlv(ə)nt/,

/iˈvɔlv(ə)nt/,

/əˈvɑlv(ə)nt/,

/iˈvɑlv(ə)nt/

Forms: 1700s evoluent, 1700s– evolvent.

Origin: Of multiple origins. Partly a borrowing from Latin Partly a variant or alteration of another lexical item. Etymons: Latin ēvolvent- , ēvolvēns ; evolvant n.

Etymology: < classical Latin ēvolvent-, ēvolvēns, present participle of ēvolvere evolve v. In evolvent line n. at sense A. 1 after post-classical Latin recta evolvens (1697 in the passage translated in quot. 1706); compare French développante , feminine noun (1675). In sense A. 2 an alteration (compare -ent suffix) of evolvant n.

A. adj.

1. That evolves or causes to evolve (in various senses). Now rare.† evolvent line n. Geometry. Obsolete a straight line, perpendicular to a given curve, joining a point on the curve to its centre of curvature at that point.

ΚΠ

1706 tr. D. Gregory Prop. Catenaria in Miscellanea Curiosa (Royal Soc.) II. 236 The Evoluent Line UF [L. recta evolvens VF] is a third Proportional to AC and CB.

1821 S. T. Coleridge Coll. Lett. (1971) V. 175 (note) Would of itself suffice to mark Swedenborg as a man of philosophic genius, radicative and evolvent.

1859 Ann. Sci. Discov. 147 If the motion of the screen could be effected, each of its points would describe in space an evolvent circle.

1886 Cent. Mag. Aug. 651/1 Evolvent grace Produced, in time, the Ass's race.

1990 L. Rabelo et al. in Internat. Joint Conf. Neural Networks II. 191 HPDP could take advantage of the natural characteristics of ANNs in order to utilize metalearning procedures and become an evolvent computer.

2. Hinduism. In Sankhya philosophy: (of a principle of nature or being) that gives rise to other principles of nature or being; that is the cause of the existence of other phenomena. rare.With note in quot. 1882 cf. quot. 1862 at evolvant n. 1.

ΚΠ

1882 E. B. Cowell tr. in E. B. Cowell & A. E. Gough tr. Mādhava Sarva-darṡana-saṃgraha xiv. 221 That which is evolvent only. [Note] I borrow this term from Dr. Hall.

1957 Jrnl. Amer. Oriental Soc. 77 103/1 That there is a triad of evolvent factors behind the three external bhāvas would seem to be beyond doubt.

B. n.

1. Geometry. The involute of a curve. Now rare.

ΚΠ

1728 E. Chambers Cycl. Evolvent, in Geometry,..the Curve resulting from the Evolution of a Curve; in Contra-distinction to the Evolute.

1796 C. Hutton Math. & Philos. Dict. I. 452 Evolvent, in the Higher Geometry, a term used by some writers for the Involute, or curve resulting from the evolution of a curve, in contradistinction to that evolute, or curve supposed to be opened or evolved.

1852 F. Overman Treat. Metall. ii. ii. 273 By putting a pencil at the highest point of the lift and fastening it to the string..we obtain the curvature of the wiper, which is the evolvent to the dotted circle.

1990 Isis 81 26 Rigorously, EK. FL, and MN are arcs of the involute or evolvent of the circumference BEFM.

2. Hinduism. In Sankhya philosophy: a principle of nature or being that gives rise to other principles of nature or being; a cause of the existence of other phenomena. Sometimes: spec. such a principle which itself derives from another, and is not a root cause of being. rare.

ΚΠ

1882 E. B. Cowell tr. in E. B. Cowell & A. E. Gough tr. Mādhava Sarva-darṡana-saṃgraha xiv. 221 It [sc. prakṛiti] is called the root-evolvent, as being both root and evolvent; it is the root of all the various effects,..but of it, as the primary, there is no root.

1882 E. B. Cowell tr. in E. B. Cowell & A. E. Gough tr. Mādhava Sarva-darṡana-saṃgraha xiv. 222 The intellect..is itself the evolute of nature and the evolvent of egoism.

1957 Jrnl. Amer. Oriental Soc. 77 23/1 It is clear that this pattern is altogether different. It is still doubtful whether this series of eight evolvents or prakṛtis is already conceived as an evolution series.

1978 St. E. Nauman Dict. Asian Philos. 304 ‘Evolvents’, seven categories which are both caused and serve as causes of new modes of being.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	evolvent
释义	evolventadj.n. Brit. /ᵻˈvɒlv(ə)nt/, U.S. /əˈvɔlv(ə)nt/, /iˈvɔlv(ə)nt/, /əˈvɑlv(ə)nt/, /iˈvɑlv(ə)nt/ Forms: 1700s evoluent, 1700s– evolvent. Origin: Of multiple origins. Partly a borrowing from Latin Partly a variant or alteration of another lexical item. Etymons: Latin ēvolvent- , ēvolvēns ; evolvant n. Etymology: < classical Latin ēvolvent-, ēvolvēns, present participle of ēvolvere evolve v. In evolvent line n. at sense A. 1 after post-classical Latin recta evolvens (1697 in the passage translated in quot. 1706); compare French développante , feminine noun (1675). In sense A. 2 an alteration (compare -ent suffix) of evolvant n. A. adj. 1. That evolves or causes to evolve (in various senses). Now rare.† evolvent line n. Geometry. Obsolete a straight line, perpendicular to a given curve, joining a point on the curve to its centre of curvature at that point. ΚΠ 1706 tr. D. Gregory Prop. Catenaria in Miscellanea Curiosa (Royal Soc.) II. 236 The Evoluent Line UF [L. recta evolvens VF] is a third Proportional to AC and CB. 1821 S. T. Coleridge Coll. Lett. (1971) V. 175 (note) Would of itself suffice to mark Swedenborg as a man of philosophic genius, radicative and evolvent. 1859 Ann. Sci. Discov. 147 If the motion of the screen could be effected, each of its points would describe in space an evolvent circle. 1886 Cent. Mag. Aug. 651/1 Evolvent grace Produced, in time, the Ass's race. 1990 L. Rabelo et al. in Internat. Joint Conf. Neural Networks II. 191 HPDP could take advantage of the natural characteristics of ANNs in order to utilize metalearning procedures and become an evolvent computer. 2. Hinduism. In Sankhya philosophy: (of a principle of nature or being) that gives rise to other principles of nature or being; that is the cause of the existence of other phenomena. rare.With note in quot. 1882 cf. quot. 1862 at evolvant n. 1. ΚΠ 1882 E. B. Cowell tr. in E. B. Cowell & A. E. Gough tr. Mādhava Sarva-darṡana-saṃgraha xiv. 221 That which is evolvent only. [Note] I borrow this term from Dr. Hall. 1957 Jrnl. Amer. Oriental Soc. 77 103/1 That there is a triad of evolvent factors behind the three external bhāvas would seem to be beyond doubt. B. n. 1. Geometry. The involute of a curve. Now rare. ΚΠ 1728 E. Chambers Cycl. Evolvent, in Geometry,..the Curve resulting from the Evolution of a Curve; in Contra-distinction to the Evolute. 1796 C. Hutton Math. & Philos. Dict. I. 452 Evolvent, in the Higher Geometry, a term used by some writers for the Involute, or curve resulting from the evolution of a curve, in contradistinction to that evolute, or curve supposed to be opened or evolved. 1852 F. Overman Treat. Metall. ii. ii. 273 By putting a pencil at the highest point of the lift and fastening it to the string..we obtain the curvature of the wiper, which is the evolvent to the dotted circle. 1990 Isis 81 26 Rigorously, EK. FL, and MN are arcs of the involute or evolvent of the circumference BEFM. 2. Hinduism. In Sankhya philosophy: a principle of nature or being that gives rise to other principles of nature or being; a cause of the existence of other phenomena. Sometimes: spec. such a principle which itself derives from another, and is not a root cause of being. rare. ΚΠ 1882 E. B. Cowell tr. in E. B. Cowell & A. E. Gough tr. Mādhava Sarva-darṡana-saṃgraha xiv. 221 It [sc. prakṛiti] is called the root-evolvent, as being both root and evolvent; it is the root of all the various effects,..but of it, as the primary, there is no root. 1882 E. B. Cowell tr. in E. B. Cowell & A. E. Gough tr. Mādhava Sarva-darṡana-saṃgraha xiv. 222 The intellect..is itself the evolute of nature and the evolvent of egoism. 1957 Jrnl. Amer. Oriental Soc. 77 23/1 It is clear that this pattern is altogether different. It is still doubtful whether this series of eight evolvents or prakṛtis is already conceived as an evolution series. 1978 St. E. Nauman Dict. Asian Philos. 304 ‘Evolvents’, seven categories which are both caused and serve as causes of new modes of being. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < adj.n.1706
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