[ep-uh-kuh l or, esp. British, ee-po-]


of, relating to, or of the nature of an epoch.
extremely important, significant, or influential.

Origin of epochal

First recorded in 1675–85; epoch + -al1
Related formsep·och·al·ly, adverbnon·ep·och·al, adjectivepre·ep·och·al, adjectiveun·ep·och·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for epochal

Contemporary Examples of epochal

Historical Examples of epochal

  • The silence lengthened until it became acute, epochal, climactic.

    The Shadow

    Arthur Stringer

  • The 1914 catalogue was epochal in the life of this big farmer.

    Plowing On Sunday

    Sterling North

  • In 1868, Westinghouse made his epochal invention, the railway air-brake.


    Bradley A. Fiske

  • Historians recognize two epochal events in the life of the nation.

  • But in the future they will be regarded as epochal in the science of mind.

    The Religious Sentiment

    Daniel G. Brinton

Word Origin and History for epochal

1680s, from epoch + -al (1).

Online Etymology Dictionary, © 2010 Douglas Harper