Definition of E-day in English:

E-day

(also e-day, E-Day)

noun

British
  • The day of official adoption of the euro as currency; specifically 1 January 2002, the day on which the euro became the sole official currency of the first countries to participate in European Monetary Union.

Origin

1990s; earliest use found in Banker. From E- + day, after D-Day.

Pronunciation

E-day

/ˈiːdeɪ/