epoch-making

[ ep-uhk-mey-kingor, especially British, ee-pok- ]

adjective

1. opening a new era, as in human history, thought, or knowledge; epochal:

   an epoch-making discovery.

epoch-making

adjective

1. of great importance; momentous

Word History and Origins

Origin of epoch-making¹

First recorded in 1870–75

Example Sentences

This epoch-making invention, introduced in 1832, rendered possible extraordinary developments.

From Project Gutenberg

These opportunities in my case were to be the authorship of an epoch-making novel, or a great drama, or some similar masterpiece.

From Project Gutenberg

Until science made a few epoch-making discoveries the mosquito prevented some of the mightiest works.

From Project Gutenberg

In 1884, by the way, Koch made another epoch-making and beneficent discovery, and isolated the bacillus of cholera.

From Project Gutenberg

The disaster became the great epoch-making event for Jewish history and literature.

From Project Gutenberg