epochal
Americanadjective
-
of, relating to, or of the nature of an epoch.
-
extremely important, significant, or influential.
Other Word Forms
Etymology
Origin of epochal
Explanation
Epochal describes events so important and significant they have the power to usher in a new epoch. In other words they're "epoch-making." The big bang. The moment when man learned to make fire. The day your braces were removed. These events are epochal in that they mark the dawn of a new era, or epoch, of time. Both epoch and epochal derive from the Latin epocha, which in turn derives from the Greek epekhein, which combines epi "on" with ekhein "to hold," and means to pause or take up a position. Think of epochal events as worthy of an arrow on the timeline of history.
Vocabulary lists containing epochal
This Week in Words: September 8 - 14, 2018
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
This Week in Words: December 30, 2017 - January 5, 2018
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
The Princess Bride
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Looking back on the LaGuardia tragedy, Herman sees it as an epochal event that was not, at the time, understood for what it was: a glimpse of the future.
From Slate ● Jul. 7, 2026
Going much further back, oil prices also rocketed during the epochal crisis of World War II in the 1940s.
From MarketWatch ● Feb. 20, 2026
"It feels like an epochal moment, and it also feels extraordinarily terrifying."
From BBC ● Sep. 1, 2025
Pember’s journalism and advocacy, along with that of a growing number of writers and activists, both Native and not, are making clear the scope and impact of one major pillar of this epochal injustice.
From Los Angeles Times ● Apr. 21, 2025
The epochal confrontation between the two views of the Cosmos—Earth-centered and Sun-centered—reached a climax in the sixteenth and seventeenth centuries in the person of a man who was, like Ptolemy, both astrologer and astronomer.
From "Cosmos" by Carl Sagan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
