ˌretroˈaction

/ ˌrɛtrəʊˈækʃən /

noun

1. an action contrary or reciprocal to a preceding action
2. a retrospective action, esp a law affecting events prior to its enactment

Example Sentences

It is but a production, and an operation, of the same retro-action between sun-core, and earth-core.

From Project Gutenberg