Definition of "eschaton"

Only in the eschaton will God’s purpose gain its final fulfilment, a fulfilment, be it noted, which may still include some form of movement within a time-series.

1953, F. W. Dillistone, “The Church and Time”, in Scottish Journal of Theology, volume 6, page 163

And this is also true of the revelation of the eschata: they do not reach us in a discourse about the future still to come, but in an action, in which God has already really begun them in us.

1966 , Karl Rahner, “The Hermeneutics of Eschatological Associations”, in Karl Rahner, translated by Kevin Smyth, Theological Investigations, volume 4, page 336

Without these sayings, the textual basis for saying Jesus expected an imminent eschaton becomes very slender.

1994, Marcus J. Borg, Jesus in Contemporary Scholarship, page 86

He, too, constructs a philosophical history towards an eschaton. In a peculiarly inverted manner he is among the believers in progress—the goal being the undoing of the things done.

1949 December, Helmut Kuhn, “[Review of Karl Löwith, Meaning in History: The Theological Implications of the Philosophy of History]”, in The Journal of Philosophy, volume 46, number 25, page 825

The most major of these eschatons involves the 65-million-year Cenozoic era, which began with the Cretaceous-Tertiary extinction event that decimated the dinosaurs and is now closing with another mass extinction event.

2011, Darrin Drda, The Four Global Truths: Awakening to the Peril and Promise of Our Times, page 152

From predictions of an imminent technological eschaton to theologically inflected ideas of human perfectibility achieved through technological means, there is ample warrant to see transhumanism as culturally other.

2016, J. Benjamin Hurlbut, Hava Tirosh-Samuelson, “Introduction: Technology, Utopianism and Eschatology”, in J. Benjamin Hurlbut, Hava Tirosh-Samuelson, editors, Perfecting Human Futures: Transhuman Visions and Technological Imaginations, page 10