also: エポックメーキング
epoch-making; pivotal
Describes an event, discovery, or work that is so significant it marks the start of a new era. Often used in formal or journalistic contexts.
That invention was an epoch-making event.
An epoch-making study was published.
Spelling with interpunct; mainly seen in dictionaries or for clarity.
Rare spelling combining interpunct and long vowel marker.
Loanword from English 'epoch-making'.