Definitions for: Epochal

[adj] highly significant or important especially bringing about or marking the beginning of a new development or era; "epochal decisions made by Roosevelt and Churchill"; "an epoch-making discovery"

Webster (1913) Definition: Ep"o*chal, a.
Belonging to an epoch; of the nature of an epoch. ``Epochal
points.'' --Shedd.

Synonyms: epoch-making, important, significant