retroactivityn.

Brit.

/ˌrɛtrəʊakˈtɪvᵻti/, U.S.

/ˈˌrɛtroʊˌækˈtɪvᵻdi/

Origin: Formed within English, by derivation. Etymons: retro- prefix, activity n.

Etymology: < retro- prefix + activity n., after retroactive adj. Compare French rétroactivité (1801), Spanish retroactividad (19th cent.), Portuguese retroactividade (19th cent.), Italian retroattivita (1877).

The condition or fact of being retroactive or retrospective (chiefly with reference to the implementation of laws and regulations).

ΘΚΠ

the world > time > relative time > the past > [noun] > application or operation with regard to past time

retrospection1650

retrospect1662

retroaction1728

retroactivity1829

1829 J. Bentham Justice & Codification Petitions iii. 110 In the case of judge-made law, this retro-activity is of the very essence of this species of law.

1894 Daily News 5 Nov. 7/1 The retroactivity of all treaties, provided that reciprocity is agreed upon, will accordingly be admitted henceforth.

1942 Ann. Amer. Acad. Polit. & Social Sci. 220 256/2 His observations concerning the retroactivity of the Mexican oil and land laws find respectable support in the writings of non-American authors.

2000 R. J. Golson Papon Affair 16 The retroactivity of the law was a source of very real discomfort.

This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022).

单词	retroactivity
释义	retroactivityn. Brit. /ˌrɛtrəʊakˈtɪvᵻti/, U.S. /ˈˌrɛtroʊˌækˈtɪvᵻdi/ Origin: Formed within English, by derivation. Etymons: retro- prefix, activity n. Etymology: < retro- prefix + activity n., after retroactive adj. Compare French rétroactivité (1801), Spanish retroactividad (19th cent.), Portuguese retroactividade (19th cent.), Italian retroattivita (1877). The condition or fact of being retroactive or retrospective (chiefly with reference to the implementation of laws and regulations). ΘΚΠ the world > time > relative time > the past > [noun] > application or operation with regard to past time retrospection1650 retrospect1662 retroaction1728 retroactivity1829 1829 J. Bentham Justice & Codification Petitions iii. 110 In the case of judge-made law, this retro-activity is of the very essence of this species of law. 1894 Daily News 5 Nov. 7/1 The retroactivity of all treaties, provided that reciprocity is agreed upon, will accordingly be admitted henceforth. 1942 Ann. Amer. Acad. Polit. & Social Sci. 220 256/2 His observations concerning the retroactivity of the Mexican oil and land laws find respectable support in the writings of non-American authors. 2000 R. J. Golson Papon Affair 16 The retroactivity of the law was a source of very real discomfort. This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022). < n.1829
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