perturbativeadj.

Brit.

/pəˈtəːbətɪv/,

/ˈpəːtəbeɪtɪv/, U.S.

/pərˈtərbədɪv/,

/ˈpərdərˌbeɪdɪv/

Forms: late Middle English perturbatyffe, 1600s– perturbative.

Origin: Probably of multiple origins. Probably partly a borrowing from French. Probably partly a borrowing from Latin. Probably partly a borrowing from Latin, combined with an English element. Etymons: French perturbatif ; Latin perturbativus ; Latin perturbāt- , perturbāre , -ive suffix.

Etymology: Probably partly < Middle French perturbatif (1483 in the passage translated in quot. 1490 at sense 1; also 1380 in an isolated attestation; compare French perturbatif (1701)) and its etymon post-classical Latin perturbativus causing disturbance (frequently from 13th cent. in British sources), and partly < classical Latin perturbāt-, past participial stem of perturbāre perturb v. + -ive suffix. Compare Italian perturbativo (1499).

1. Causing or apt to cause disturbance, agitation, disorder, or confusion. Cf. perturbation n. 1, 2.

ΘΚΠ

the world > the universe > heavenly body > movement of heavenly bodies > [adjective] > deviation > causing

perturbative1490

perturbing1559

society > authority > lack of subjection > unruliness > disorder or riot > [adjective] > causing

perturbative1490

perturbant1890

1490 W. Caxton tr. Bk. Eneydos (1890) 46 One apposite ayenst another, causynge dyuersite perturbatyffe in the lowe elementes.

1638 Gen. Demands conc. Covenant 7 All such bands are declared to be seditious, and perturbative of the publick peace.

1742 tr. H. Boerhaave Acad. Lect. Theory Physic I. 148 Without this perturbative motion of the Parts preceding, neither Vinegar nor a vinous Liquor could be made from Malt or Sugar.

1823 Ann. Reg. 176 Journals edited in a manner not less dangerous and perturbative.

1859 N. Amer. Rev. July 166 Vital force..is the great perturbative element which renders the results attained by the faithful student of nature approximate rather than precise.

1950 A. B. Glathe Hume's Theory of Passions & Morals i. 52 The perturbative effect of the extraneous associations is reduced in the case of the father.

1993 W. J. Morgan in C. S. Prebish Relig. & Sport v. 136 The perturbative elements of modern competitive sport are to be located precisely in the suppression of the play spirit.

2. Physics and Mathematics. Of, relating to, or involving perturbation (perturbation n. 4b) of a physical system, or of the equations representing such a system.

ΘΚΠ

the world > relative properties > number > algebra > [adjective] > subject to or causing perturbation

perturbed1901

perturbative1926

1926 Proc. National Acad. Sci. U.S.A. 12 664 The essence of the proof consists in showing this sum invariant under a contact transformation of the type involved in reducing the secular part of the perturbative potential to a diagonal element.

1968 Physical Rev. 173 1034 This mechanism also leads to much stronger isospin mixing..than is predicted by the usual perturbative treatment of Coulomb interactions.

2000 Proc. National Acad. Sci. U.S.A. 97 6254/2 If e^−H is not Gaussian, perturbative techniques are available to approximate its expectations by Gaussian expectations.

Compounds

perturbative function n. Physics a function expressing the potential of the factors which cause perturbation, esp. (Astronomy) in the motion of a celestial object.

ΘΚΠ

the world > the universe > cosmology > science of observation > astronomical calculation > [noun] > part

argumentc1405

astronomicalsa1690

element1788

parameter1829

perturbative function1856

luminosity function1924

Hubble constant1933

Oort constant1941

1856 J. D. Runkle (title) New tables for determining the values of the coefficients in the perturbative function of planetary motion.

1914 F. R. Moulton Introd. Celestial Mech. (1970) x. 406 The development of the perturbative function consists of three steps.

2002 Physical Rev. D. 65 93003 The non-singlet part of F₃ at low x..is taken as a power-law extrapolation of the perturbative function at larger x.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	perturbative
释义	perturbativeadj. Brit. /pəˈtəːbətɪv/, /ˈpəːtəbeɪtɪv/, U.S. /pərˈtərbədɪv/, /ˈpərdərˌbeɪdɪv/ Forms: late Middle English perturbatyffe, 1600s– perturbative. Origin: Probably of multiple origins. Probably partly a borrowing from French. Probably partly a borrowing from Latin. Probably partly a borrowing from Latin, combined with an English element. Etymons: French perturbatif ; Latin perturbativus ; Latin perturbāt- , perturbāre , -ive suffix. Etymology: Probably partly < Middle French perturbatif (1483 in the passage translated in quot. 1490 at sense 1; also 1380 in an isolated attestation; compare French perturbatif (1701)) and its etymon post-classical Latin perturbativus causing disturbance (frequently from 13th cent. in British sources), and partly < classical Latin perturbāt-, past participial stem of perturbāre perturb v. + -ive suffix. Compare Italian perturbativo (1499). 1. Causing or apt to cause disturbance, agitation, disorder, or confusion. Cf. perturbation n. 1, 2. ΘΚΠ the world > the universe > heavenly body > movement of heavenly bodies > [adjective] > deviation > causing perturbative1490 perturbing1559 society > authority > lack of subjection > unruliness > disorder or riot > [adjective] > causing perturbative1490 perturbant1890 1490 W. Caxton tr. Bk. Eneydos (1890) 46 One apposite ayenst another, causynge dyuersite perturbatyffe in the lowe elementes. 1638 Gen. Demands conc. Covenant 7 All such bands are declared to be seditious, and perturbative of the publick peace. 1742 tr. H. Boerhaave Acad. Lect. Theory Physic I. 148 Without this perturbative motion of the Parts preceding, neither Vinegar nor a vinous Liquor could be made from Malt or Sugar. 1823 Ann. Reg. 176 Journals edited in a manner not less dangerous and perturbative. 1859 N. Amer. Rev. July 166 Vital force..is the great perturbative element which renders the results attained by the faithful student of nature approximate rather than precise. 1950 A. B. Glathe Hume's Theory of Passions & Morals i. 52 The perturbative effect of the extraneous associations is reduced in the case of the father. 1993 W. J. Morgan in C. S. Prebish Relig. & Sport v. 136 The perturbative elements of modern competitive sport are to be located precisely in the suppression of the play spirit. 2. Physics and Mathematics. Of, relating to, or involving perturbation (perturbation n. 4b) of a physical system, or of the equations representing such a system. ΘΚΠ the world > relative properties > number > algebra > [adjective] > subject to or causing perturbation perturbed1901 perturbative1926 1926 Proc. National Acad. Sci. U.S.A. 12 664 The essence of the proof consists in showing this sum invariant under a contact transformation of the type involved in reducing the secular part of the perturbative potential to a diagonal element. 1968 Physical Rev. 173 1034 This mechanism also leads to much stronger isospin mixing..than is predicted by the usual perturbative treatment of Coulomb interactions. 2000 Proc. National Acad. Sci. U.S.A. 97 6254/2 If e^−H is not Gaussian, perturbative techniques are available to approximate its expectations by Gaussian expectations. Compounds perturbative function n. Physics a function expressing the potential of the factors which cause perturbation, esp. (Astronomy) in the motion of a celestial object. ΘΚΠ the world > the universe > cosmology > science of observation > astronomical calculation > [noun] > part argumentc1405 astronomicalsa1690 element1788 parameter1829 perturbative function1856 luminosity function1924 Hubble constant1933 Oort constant1941 1856 J. D. Runkle (title) New tables for determining the values of the coefficients in the perturbative function of planetary motion. 1914 F. R. Moulton Introd. Celestial Mech. (1970) x. 406 The development of the perturbative function consists of three steps. 2002 Physical Rev. D. 65 93003 The non-singlet part of F₃ at low x..is taken as a power-law extrapolation of the perturbative function at larger x. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < adj.1490
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