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⇱ epochal - WordReference.com Dictionary of English

epochal

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈepəkəl/US:USA pronunciation: respellingUSA pronunciation: respelling(ep′ə kəl or, esp. Brit., ē′po-)


WordReference Random House Unabridged Dictionary of American English © 2026
ep•och•al  (ep′ə kəl or, esp. Brit., ē′po-),USA pronunciation adj. 
  1. of, pertaining to, or of the nature of an epoch.
  2. extremely important, significant, or influential.
  • epoch + -al1 1675–85
ep′och•al•ly, adv. 

WordReference Random House Learner's Dictionary of American English © 2026
ep•och /ˈɛpək; esp. Brit. ˈipɑk/USA pronunciation   n. [countable]
  1. a period of time marked by noteworthy features or events: an epoch of peace.
  2. Geologya division of geologic time.
ep•och•al, adj. 

WordReference Random House Unabridged Dictionary of American English © 2026
ep•och  (ep′ək or, esp. Brit., ē′pok),USA pronunciation n. 
  1. a particular period of time marked by distinctive features, events, etc.:The treaty ushered in an epoch of peace and good will.
  2. the beginning of a distinctive period in the history of anything:The splitting of the atom marked an epoch in scientific discovery.
  3. a point of time distinguished by a particular event or state of affairs;
    a memorable date:His coming of age was an epoch in his life.
  4. Geologyany of several divisions of a geologic period during which a geologic series is formed. Cf. age (def. 12). See table under geologic time. 
  5. Astronomy
    • an arbitrarily fixed instant of time or date, usually the beginning of a century or half century, used as a reference in giving the elements of a planetary orbit or the like.
    • the mean longitude of a planet as seen from the sun at such an instant or date.
  6. Physicsthe displacement from zero at zero time of a body undergoing simple harmonic motion.
  • Greek epoché̄ pause, check, fixed time, equivalent. to ep- ep- + och- (variant stem of échein to have) + -ē noun, nominal suffix
  • Neo-Latin epocha
  • 1605–15
    1. age, date, era, time. See age. 
'epochal' also found in these entries (note: many are not synonyms or translations):
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